Wow, that's a big drop Dave, 3.5s to 2.7s....I'm curious as to why you say 3.55 is not very streetable? You'd rev around 3000 at 65-70 mph, right? I've just purchsed a 741 suregrip with 3.55 gears to replace 3.23 gears in a 489 carrier, and I would have thought 3.55 was the perfect compromise for the street. But then again I've never run 3,55 gears in a car before, hence my curiosity.