There hasn't been any news on a Lexus racecar since we heard rumors that the IS-F racer, unveiled at the Tokyo Auto Salon, was really a reskinned 2004 Opel Vectra DTM. While Lexus might not be supporting a factory-backed motorsports program for the IS, that doesn't mean that privateer teams can't develop a car on their own. DRC Motorsports has done just that and has built two IS 350 racecars that will compete in the GT class of the SPEED World Challenge. Dubbed the IS GTF, it will be sporting a 4.7-liter V8 putting out 510 horsepower and attached to six-speed sequential transmission. The first car will make its debut this weekend at Mid Ohio with Jeff Altenburg, last year's SWC Touring Car champion, behind the wheel, and the second car, driven by Robb Holland, is scheduled to make its maiden run the following race at Road America. Both cars are scheduled to run the remainder of the race season. If you want to watch the new IS GTF in action, SPEED will be airing the race on Thursday, July 24 at 1:00pm (EDT) following the Touring Car race.