If you buy the BHJ balacer. I think it is about 3lb heavier than stock.
If you use the BHJ balancer ,you should zero balance your stock crankshaft pulley.
Or buy a set of aluminum under drive pulley that are zero balanced.The aluminum
UD pulley set,crankshaft pulley will be lighter than the stock steel crankshaft pulley.
Buy around 6+lb (don't remeber the exact weight) lighter.
So with the BHJ balancer and zero balance UD aluminum pulley.The set up will be lighter.
With the BHJ balancer and the stock crankshaft pulley that has been zero balanced
you will have more weight on the end of the crankshaft.
I just thought I would mention this if you have any concerns about reciprocating weight.
randy