Hey here are some great links.
Go-Jeep-XJ has some great writeups and is kind of what inspired me to start this blog.
CherokeeTech Forum is a smallish forum with some great people on there. If you sign up dont forget to put Tux_Fan as the referrer.
MyJeepXJ has some good stuff. The link goes to their lift comparison stuff which is fantastic.
Rock Lizard Fabrications has some fantastic writeups. I linked my shock writeup to his shock bolt fix. Also has a great 2 inch budget boost writeup.
LungHD Another fantastic website for Jeep Cherokee stuff. He has some excellent write ups anywhere from an engine swap to more budget boost stuff.
Radiator Barn Fantastic radiator dealer. I bought a high end 3 core radiator from them for around 200$ shipped to my door overnight for no extra charge. Talk about customer service.
Thats all for now.