hi i have a question i have a 1950 3100 factory drive train i had 2 inch wide square u bolts made and made 4 inch blocks when i drop the rear it moves back is that where i want the blocks to set like off set the guide holes so i dont get the forced torq tube into the trans.and will 2 inch u bolts be ok..? i know there supposed to be 1 7/8 any help would be great thx