mustangmike1969

I am putting a 1980 302 into a 1966 mustang and have some questions regarding this swap.
1. The motor has a 50oz balancer and flexplate, the original motor had a 28oz flexplate. Do they make a 4 bolt crank pulley for the new balancers so all of my belts line up?
2. Is the motor balanced by matching the appropriate flex plate with the proper balancer or does the crank specifically have to be made for a 28oz or 50oz application?
I can pull the old flextplate and balancer off of the old motor, but with this wear my bearings out of the new engine?
Thanks,
Mike

uberstang1

U need to use the oz balance specified for that year motor.