01stangt

I have the samething with the gears...i wanna get some 4.10's but don't wanna completely void my warranty...it should only void the part that the mod affects right? but, wouldn't headers void a blown engine or something? and gears void me getting a new tranny if it started acting up?...

wwmost

yea i think it voids the warrenty. i know if you take out the cats it does. and the gears are ford anyways. but they have to prove that the part that you installed made that part break if you took it in for warrenty.