F1 minnows Marussia and Caterham once again head into the final round of the season knowing that either could snatch the final paying place in the constructors' championship in Sunday's Brazilian Grand Prix.

Just as twelve months ago, Marussia holds the upper hand, but Caterham theoretically has less to do to overturn the 'deficit', as it only needs to match the Banbury's team's best result of 13th place to supplant it in tenth spot overall. Last year, it took a Vitaly Petrov pass on Charles Pic for eleventh position with five laps remaining in the season to switch their places.

Caterham has the better overall results for 2013, with three 14th places to Marussia's one enough to turn the tide should either Pic or Giedo van der Garde finish 13th on Sunday, and team principal Cyril Abiteboul admits that success would mean more than just a financial boost for his squad.

"I think [finishing last] will be essentially costly for the morale of the team," he noted, "Everybody believes that we deserve [tenth]. All due respect, I think we both have done a good job, but the figures tend say we deserve it just a little bit more than those guys. I think, whatever the result, we are committed to the sport, so it's not going to make a huge difference. It will give a bit of a headache to my financial director but, apart from that, it's not going to change our entire strategy to F1."

Marussia's John Booth agreed that the sporting outcome would take precedence over the financial reward of finishing tenth, but was at odds with the Frenchman's claim that Caterham had been the better team, particularly as his squad has devoted a lot of time and resources to making sure it is ready for the new-look F1 due next season.

"There may be a small financial consideration, but it's the sporting matter that is more important," he insisted, "We are the smallest team, we operate with the smallest budget, but we are racers and we want to improve. Tenth place would be a massive plus for the guys in the factory.

"It's been a good scrap this year. There was a large spell in the middle of the year when Caterham looked much stronger than us, [but] we had a good race last week and we think we're getting on top of our issues. It's been a long, long season. We took that tenth place [in the championship] in Malaysia, [and] the last update we brought to the car - of any significance - was Barcelona, so it's been a long old season hanging on to that tenth place and it's been pretty nerve-wracking to be truthful.

"We've brought some small improvements and worked very hard at optimising what we have, and I think we have gone forward. It would have been better to have two or three large upgrades through the season, but we are the smallest team and to build a 2014 car that has to be on the track in Jerez in January was a big feat for us. We've had to concentrate on that very hard."

As usual, both teams will have to come from the very back of the grid if they are to record a better result than already on their slate - despite Abiteboul confirming that both his drivers had been performing a rain dance ahead of qualifying.

Despite Jules Bianchi's best efforts, Caterham will have the upper hand when the lights go out, with Charles Pic and Giedo van der Garde - the latter by just 0.04s - lining up ahead of the Marussias.

"The rain was still falling at the start of qualifying, but not enough for wets so we went out early with the whole pack to maximise our running time on the inters. It was very tricky out there, but I'm happy with how it finished," Pic reported, "The main aim was to be in front of our nearest rivals and we've done that, keeping in reserve an extra set of intermediates, so we start what could be a fascinating race tomorrow where we'd aimed for. If it keeps raining like this we could have a chance of reclaiming tenth place in the championship..."

Bianchi will line up on the inside of the final row having missed the narrow 'dry' window at the start of Q1 and only having time for a single lap before track conditions deteriorated. The Frenchman was encouraged by the slim gap to van der Garde, however, particularly as he lost 0.6secs due to a mistake at the end of his lap.

"It was a very difficult qualifying today," Bianchi admitted, "We had to do everything we could early on as we knew the rain was coming but, in the end, the window of opportunity was really only one lap. For everything after that, it was too wet to improve.

"I'd made a big mistake at the end of my one quick lap as well, so it's disappointing as I was so close to van der Garde. Now we just have to be positive for the race and do everything possible to achieve the right result for the team."