Well, I decided to go ahead and build up the 8.8 in my car since my rearend is making "clunking" noises from the last time I went to the track. Right now it's an Auburn 28 spline diff with 3.73's. I was already planning to go with 4.10's but now I can't decide which diff to buy. I'm also going with some Moser 31 spline axles for the extra strength. So what do you think? Eaton, Detroit, Auburn, ??? By the way, I don't have any plans to run a spool since this is my daily driver too.