Former IRL driver Ronnie Johncox, who is currently the driver for Infiniti Pro Series team Rev1Racing, has had his 2003 title chances increased by the addition of former Blair Racing co-owner Hayden Harris and former Hemelgarn engineer Harvey Spencer to the squad.

On the back of a disappointing eighth place finish in the IPS season opening Western Union 100 at Homestead, Rev1 owners Rick Ehrgott and Ron Johncox Snr have added a third co-owner to the team in the shape of Hayden Harris and a new race engineer for Johncox Jr in Harvey Spencer.

Harris is a general partner of EDF Ventures, a venture capital company based in Ann Arbor, Michigan He is also chairman of McLaren Performance Technologies and a racer who has competed in airplanes, hydroplanes and cars. Harris was a co-owner of Blair Racing, which finished fifth in the IRL IndyCar Series standings last season with driver Alex Barron, scoring one victory along the way.

Spencer was the race engineer for Hemelgarn Racing with drivers Cory Witherill and Aaron Fike in the Infiniti Pro Series in 2002. He also guided Guy Smith and current IndyCar Series points leader Scott Dixon to second- and third-place finishes in the 1998 and 1999 Indy Lights seasons, respectively.

Spencer began working in Formula One in 1979 as a mechanic on the McLaren team for legendary driver Alain Prost and also worked at Brabham Racing with driver Nelson Piquet.

"Hayden will bring valuable experience to our decision-making team," Johncox said. "What we liked about Hayden is that he has the same goals we do - to build a team that will eventually race in the IRL and one day win the Indianapolis 500.

"Harvey has a great deal of experience. He has engineered in Indy lights, Atlantics and Formula One, and most importantly, on the same cars as we drive in the IRL Infiniti Pro Series. He's worked with some of the legendary drivers in the sport - Prost and (Nelson) Piquet - so I'm looking forward to learning a lot from him."