As strong as our frames are...why do you think you can't get the doors open when you've got the suspension all crossed up on a hard trail. Frame Flex. As that flex acts on the cab, that flex acts on the engine block casting which is very stong, but is CAST iron, not steel, which makes it not want to give...ANY, but just flat break. If you've got a driver and no lockers and it's a road truck...solids will be fine. I'm with Barry on the new weaklinks...you bust that rat motor cause you didn't want to adapt a pair of cheap GM captured pin mounts and you'll feel pretty stupid.