I bought my last BHJ from Nightmare Performance. He paid a bunch to get WD or whatever you call that.
His balancers have a modification to allow for factory AC and sells them for 535 $
He has a big lot of them so what you do is get a exact measurement of your snout and he picks one out that is the correct press fit.
But I had to buy a not so cheap Moroso puller-installer to take it on and off.
Thanks Jay S for explaining all that for me and everyone else.
http://nitemareperformance.com/bhjbalancers.html