New Jeep owner

I just purchased a 1991 Cherokee sport for $800. the body is org. with stock susp. I want to put bigger tires on it, Will 31 inch tires fit without any susp adjustment. And also I have heard that you can gain 2 inches of clearance by putting spacers in the coils and and on the rear end. How does that work and can you tell me where I can get the materials needed to make this adjustment. thanks for the help Paul

try the Cherokee forum in jeepsunlimited.com
They have about 10,000 posts on just these subjects.

look up www.quadratec.com They have the best prices on original and aftermarket suspension kits

way to gain clearance that I've seen would be the TeraFlex budget boost (BB1x).
It'll give you a quick 2" but you're still riding the original suspension.
http://www.teraflx.com/index2.htm
I've found the kit through www.ok4wd.com for about $150