any bracing involved when removing front rails?

did all that everything measures up just fine its literally not even a quarter inch i most likely am gonna try to rig the ratchet system up that should do the trick...i completely cleaned everything up the end of the frame rail underneath the floor was bent up a little i straightened it out the best i could maybe it just got bent a little to much? i dont think the body twisted of anything like that im just worried about welding this thing all the way in and have everything be screwed up