so pretty soon i will be gettin a bonus from work....i'm not sure what to do with it...i'm thinkin either keep my cherokee and build it a little more its a 1990 with 170,000 miles on it runs great it has a couple little things that i need to go threw but not a big deal i'm thinkin front bumper and rock rails new tires and maybe long arm...or sell it and buy a newer 97+ cherokee and just drive it stock for a while....what do you guys suggest i should do?? i'm thinking just keep the cherokee i got and go from there

Depends, are you happy with the one you have now?
If you have had it for a while and know a little history, and it has been good to you I would keep it, just so you don't end up getting another XJ that may need unknown work, and you wouldn't know how the PO has taken care of it..
Also its gotta be paid off so all the money from the bonus can go to mods

i've had it for 3 years haven't had any major problems with it just the usual jeep stuff..i was mind set on selling it but i love the rig just was thinking about getting a newer one for more power and more comfortable interior

The only different you'll notice is your wallet getting lighter. Keep the one you have.

just buy lots of beer and use the rest to mod the xj that you have