I dont know that I have enough knowledge to be able to determine if a PO has done the lift right, or done the mods and rebuilds right.
it is a gamble no matter what?
Not really look for extended brake lines. Look for what brand the springs are. See how the rear was lifted, blocks are the cheapest, springs and or shackle flip are both very good. Look for steering correction. See how much of the slip yoke of the driveshaft is showing (to determine if they have been lengthened). The thing nearly no one does is gears, most just lift it and leave stock gears, if it has aftermarket gears it was more than likely done right.
Look for obvious hack fixes. Wire holding up the exhaust, wood screws anywhere run away fast, house carpet in the cab, crappy welds, ill fitting aftermarket stuff.
Look for signs of hard off road use, scrapes or dents in the gas tank skid, undercarriage, on the skid plate for the t-case.
Important to use overall condition too. If there is tons of grease on the underside of the body it means stuff is leaking. If the underside is very very clean it could just mean a recent cleaning, take it for a drive and as soon as you get back crawl under it.
It may take till spring time or even later to find what you want. You also need to figure out how far you are willing to travel. We have lots of guys around this site who are perfectly willing to go look at something for ya.
