Hey I own a 1984 RA65 Celica GT-S, I have vented disc brakes with the 6.7 diff. I was curious if I swap out my rear end in order to get the 7.5, can I keep my same lower control arms? Or different fitment? Also I having recently lowered my rear and added some spacers so I have a bit of poke in the rear but its different, one side has way more poke and is rubbing where as the other side is tucked. Both on BC springs with adjustable perches and same size wheel and spacers, could it possible be bent lower control arms? Any information helps thanks!