turbo the D, im doin it at the end of summer, check out turbod16.com great site with lots of info, dont let people talk u out of the SOHC turbo, its a good choice and very cost effective, for 2,500 bucks u can beat up on a lot of cars and get into the 13's. better than a swap if u ask me. and if u blow the engine a new D is really cheap.