Im trying to figure out the rear axle size on a 2000 V6. Im building it for drift applications and the LSD i need only fits 31spline 8.8 inch axles. Please let me know.

 

Stock sixer size is 7.5".

 

you I believe have a 28 spline 7.5 inch rear end ... but you can try to find a gt rear end.

 

Yeah, you're going to have to grab an 8.8 out of a 99-04 GT/Mach, and you'll want to order up some new axles, too. Stock ones, even in 8.8's, are generally 28-spline. Might as well go with some nice Mosers, Superiors, Strange's, etc, while you're at it.