Hello All, I have a 68 442 that i paid too much for and I`m putting too much money into !! lol The spring perches on the rear end are bent and rusted off. Its a ten bolt O type, only one tire spins when I hammer the gas most of the time. Once in awhile both will spin. I would like to know what the dimensions should be to make this the "correct" rear end for my car before I spend money having it repaired. Also does anyone know where to get replacement perches for a coil spring car? Thank you for any help.