yes, the v6 and v8 use the same exact gears, you want to order them for a gm 10 bolt 7.625 (i think) rearI don't know what I have in it now, I am told a set of 3.73 would really work well. Do you order the same gears for a V6 rear end as you do a V8??
Also, if you do headers, do you have to do a tune???