Sorry for the slow reply man. Time is a bit tight so I've been knocking out lots of misc MP achievements with V and Deek. Unfortunately Gears 3 is not in the radar right now but I have 5 boost copies when I start up. My estimated start for Gears 3 is around July or August though when I get back from the next deployment though so I can help fill in some slots for you if you're short handed then.
75 laps on Nissan Speedway. Fuel & Tires to off, Damage to cosmetic. Collisions were Default I believe. When you choose your car, turn off all assists except you can leave automatic transmission. If you use a fully upgraded 1966 Ford GT (I think that was the model) you can earn about $243,000 per race assuming you start with a 8 person room.