Anyone know the size (length/diameter) for the rear upper and lower control arms? Looks like i will have to buy some grade 8s. How many washers do i need? thanks

The originals don't require any washers. I used Grade 9's on my 70 and put washers on both sides. I don't recall off hand what the length I used is, but I still have some extras I can measure for you.

I can measure length while on the car. Diameter is really what i need.