[Keith True]

You do need good concrete for a 2 post.You can set a 4 post on most anything,it is self supporting.What I like about my Challenger is the fact that it has 52 inch feet on it,and they are 6X6 angle iron.That makes for a good footprint.I really don't care for the 2 post lifts with something like a 20X20 plate for a foot.I always get the feeling that I could tip something if I rock the car too much.With my 2 post I put the rear risers on the frame where the rear radius rods cross it.I put them on the front side so I can roll the rear end out.On the front I put the risers under the frame at the side motor mounts.With 4 resting points the car is more rigid than when it sits on it's feet.I do strap the rear of the car to the lift when I remove the rear end,I feel like the engine weight wants to tip it frontwards.No evidence to support that thinking,I have tried to rock the car like that without strapping it,no problems,it just makes me feel better doing it.