That might be a idea keep me in the loop. Where are you going to get you're motor rebuilt? I have a lot of little jobs to do on the car and having someone in NZ to bounce ideas off would come in handy. I'll put a message on your profile of my email address .
That's very common with a leaf spring set up, but with a 4 and 3 link rear end the rotation should be pretty minimal in theory. Worn out or soft bushings will allow it to rotate some amount.
