Want a 4.5 lift
 

Looking to lift 4.5 suggestions?

Serious offroad

How much are you looking to spend?

All sort's of options out there..
At minimum youll need
Coils, Shocks, Leafs (or leafs + shackle), aftermarket LCAs, extended brake lines, adjustable track bar.

Don't forget an SYE...also, what kind of wheeling do you do? Is it a mall crawler, or do you go offroad alot? Serious has a great kit from what I've read, and has good customer service, you really can't go wrong. If you have never lifted a vehicle before, I suggest you start doing a **** ton of reading as to what is available out there, what works best for different scenarios (light trails, mudding, rockcrawling, those pesky mall curbs, LOL), before you commit to buying anything. Read reviews. It is a LOT of reading as the subject has been covered to death, but you will thank yourself later for being informed and making the right decision for YOU, and doing it right from the get go.

Ive had 4 XJs, 3 of which were at 4.5" .. never had a vibe with no SYE

You've been lucky, LOL....just stating that he should be aware of what might have to happen to get it right is all...

If anything id say go with a HnT.
100 bucks, then you can run a front xj shaft in the rear.