I had my 69RR aligned today and it was not pretty. The best caster they could get was -1.2 on the Drivers side and +1.2 on the passenger side. Quite a bit under the +3 to +5 that everyone suggests. I went online and see that there are different offset bolts available.
My thought is to get a +2.5 for the left UCA and then the best reading I can get is +1.25 both left and right side.
Do I understand correctly?
Any better idea for stock UCA's?
Is +2.5 the biggest?
No. The problem with the driver's side is a problem with the driver's side. Its caster has nothing to do with the passenger side caster.
It could be effected by ride height. (and if the car is running super stock leaf packs its going to be a little more difficult. )
First thing to set is the ride hieght per shop manual. You can set it on the low side of the specs or even a little under. Lower will gain some positive caster, just like it does when the suspension compresses.
Then set the camber,
Then the caster,
repeat if needed.
Finally, set the toe.
