[Mike Taylor 3601]

when you have your engine balanced,have it done with the balancer and flywheel you are going to run.
There is quite a bit of difference in external balancers,flywheels and can make a big difference in the balance of your crank,if is stick have pressure plate done also.
if had a choice and had to be external balance,I would use 28OZ before 50OZ , 28 OZ will flex crank less. If you use 50 OZ crank you will have to use 50OZ balancer and flywheel in case you didn't know.
Mike Taylor 3601