Install kit with gears or no?
 

My 2000 gt has 40,000 miles. Should I get the install kit with with the 4.10 gears or no?

I'd say yes with that many miles.

Mine has 23,000 on it and I am getting it..."while your in there... ... ..." cheap insurance?

get em

4.10 Performance Gears 8.8 What does the 8.8 stand for? I have a 2000 gt conv. 5 speed. Also should I get new bearings?

8.8 is the rear end size in your GT.
So, youll need the 8.8 install kit.

That is what the size of the rearend you have.And yes it's an 8.8

Matt beat me to it :)

Thanks what about new bearings? Kit with bearings is 59.99. Kit without it 29.99