Do more than glance.
READ thru several build threads - look for long ones and you can understand how each step brought it's challenges. Most people start with a 2" BB or a 3" basic lift and then continue from there. You will begin to know the terms and the other parts that need to be replaced or upgraded.
To run 4.5" properly you will need to invest the better part of 1000 bucks plus your wheels and tires. PROPERLY is the emphasis here.
'00 XJ Sport, White - almost done for now...
'11 Town and Country - people mover :-(
'88 XJ Up Country, '01 XJ Sport, '08 KK Limited, '98 XJ Parts Donor, '07 XK Limited (the Stall-ander)