Czabok-Simpson Motorsport has made the switch from Porsche to Aston Martin GT4 machinery for the remainder of the IMSA Michelin Pilot Challenge season, while adding a second GS class entry in the process. The Indianapolis-based team, which has long been affiliated with running Porsches, will field two Aston Martin Vantage GT4 Evos beginning with next weekend’s round at Virginia International Raceway. While Gordon Scully and Morgan Burkhard will remain together in the No. 2 entry, Ayrton Houk as Ismaeel Ellahi will team up in the No. 3 Aston Martin for a three-race Pilot Challenge program. The shift to the British manufacturer is being billed as a “strategic move” according to a team statement, in order to get a jump start on the 2027 season. Sportscar365 understands CSM acquired one of Rebel Rock Racing’s Astons that it previously ran in the series. “Moving both cars to the Aston Martin now is an important step in our preparation for 2027,” said team co-owner Stephen Simpson. “It gives our engineers and drivers three race weekends to build a meaningful base of knowledge in Michelin Pilot Challenge conditions. “Ayrton has already tested with us several times and has consistently impressed the team with his pace, feedback and approach. “Ismaeel’s development in such a short period has been exceptional, and his CTMP victory showed that he is ready for this next challenge. “Gordon and Morgan give us the experience and continuity we need, so we believe these lineups create a very strong foundation for the rest of this season and for 2027.” Houk, 23, is additionally confirmed to also contest the Pirelli GT4 America season-ending rounds at Indianapolis Motor Speedway with CSM, with his co-driver yet to be announced. “The testing I have done with CSM gave me a real appreciation for how the team