www.pentastarparts.com.au has gear drives and double roller chains. FWIW the crank gear and chain is the same as a B/RB. Finding the cam gear is the trick. Every slant I've ever taken apart had an oil slinger so I guess they will fit.
I figured it should have one but instead it just had a fiber gasket between the balancer and gear and looked to be unmolested from OEM status. The oil leakage made me suspect the slinger was not present as was the case.
Once again, some got a slinger, some didn't. I have seen this to be true with V-8's too. Must depend on what day it was made and if the guy installing had a hangover or not.
Put the slinger in or it will almost definitely leak.
Ran without one in my sb with no problems tried it with a six and leaksville Slingers fit every thing slnt-sb-bb.