Well a lot of people seem to think that a T51R is too much of a turbo for the street and a quicker spooling, lower topend power turbo would fit a lot better (I was also thinking about it and I could always run some NOS for the track and make up some time since I wouldn't be running the largest turbo out there). Anyways, the T78 seems like a really nice setup from what I can see but then I heard about the T66. See, what I'm looking for is something that makes great top-end power, with as quick of a spool time as possible and is kind of different from everyone else's setup. This T66 seems like it would be an awesome turbo. Does anyone have some dyno sheets from a turbo like this? I heard same Top end as the T78 but because it's a BB (atleast the Innovative Ballsitic one) it spools quite a bit quicker. Anyone have anything on it? Thanks a ton.