brake and tire question

[8msteam]

with a stock 96 cherokee se (sport edtion i guess) the rear brakes are drum can i make them discks without doing anything to the fluid resovior or anything like that?
aslo waht is the biggest i can fit under their without a lift?

 

[Chancer]

Question 1 - yes.

But your best bet is to search. Several threads are bumping around at the mo about brakes. First identify your axle, then go from there.

Question 2 - again, search, but IIRC, 235s/ 30's are recommended.