07 S197

Whats everyones thoughts and opinions on the 8.8 diff from ford(oem 03-04 Cobra) anyone running this? Also, im thinking about moving up to 4.10's i have 3.73's right now. I'm still on the stock 18's, but at the track i run a 28" tall mickey thompson. It comes off the line good but when i switch to second it kinda falls on its face then starts to pick back up. So i thik i might need to switch to 4.10's to keep it pulling strong through the gears with that tall of a tire.

Any thoughts?
thanks