Just put in my Motive Gear 3.90s....
 

.....damn do I love them. Well considering I just went from a 2.73, who wouldn't?!? Well, I got them for a hell of a price and after going from my 16in ponies on my 98 to a set of 17s from a 2001, I noticed that I loss a lot of gear. So I thought the 3.73 wouldn't be enough and the 4.10s to be to high. What a great medium. Now how to fix this speedo problem> any thoughts?

THanks,

Jayson

Can't you just put a speedo gear in the 98's? Call up Dallas Mustang and find out what you need.

A speedo gear will work but your speedo will be off by about 5-6mph, costs only $15.00.