Quote:
Originally Posted by PDW HOTRODS
I wouldn't fill those seams unless you boxed the frame. If the frame is not boxed it will twist, and if there is no flex in the cab, things could crack. If the frame is boxed, it should be rigid and the suspension shoul take all the twist.
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He is right especially if you use these off road. The frames and bodys are designed to give a little (frame actually quite a lot) that is one reason they are riveted. On mine I have cracked the welds at the bottom of the windshield A pillar from having diagonal wheels up high and the frame racked. Never did figure out how the windshield stayed intact. I have decided to just leave all of my seams and gaps (like at the door sill/fender and sill/rear cab corner) alone, less work now and in the future. BUT I think if you are going for the smooth look you should do them all. For just cruising and around town it should be OK.