I try not to buy any cars that have been modified. Especially jeeps. The previous owner can tell you all they want about who did the work and how they never beat on the jeep but the bottom line is that you'll never know the truth.
Buy a stock vehicle, drive it and get used to it, then modify it according to your own taste and needs.
Thats the fun in building any type of car or jeep. Make it your own and be proud of it.
'88 YJ SBC 350, SM465 Trans, 8.8 Locked, HP D30 Locked, NP231, 3.5" BDS Springs, 33" Duratracs