Gear's

I have another question,i'm thinking of using a 93 jeep Cherokee 8 1/4 that's the only reason for 3.55s since it's so hard to find a reasonably priced 8 3/4 around my area.Is this a good idea? I really don't have the cash for anything else this car was built with what I collected over the year's,nothing better than beating the rich guy in his mustang!