Will these gears fit?
 

Will 3.73 gears for an 87 Mustang 7.5 rear end fit my 02 7.5 differential?

I'm not positive, but if they're both 7.5'' then I say they should, yeah. Might try calling AM and asking, or just wait for spike to respond.

7.5" ford is 7.5" rear end go for it.

Sweet! I can get them for $35 from someone who was gonna use them on a foxbody!!

for 200 bucks you can find an 8.8 with posi.

+1

^ When one is available, which around here they aren't. :(