I've never seen an "aftermarket" one - who makes one and where can you get it? I have seen a mercury filled balancer that goes under the stock harmonic balancer.

 

Pittsburg power sells aftermarket balancers.

I don't got the link right now, but they should be easy to find on the web.

 

Yah, that's the one that I mentioned - it is an add-on, not an aftermarket replacement for the harmonic balancer (AKA viscous damper). I just scored a new O.E.M. damper off of eBay for $100 - about 1/4 what the dealers charge :shock: 8) . I'm thinking of seeing if I can fit one of the centramatic balancers under it - I can get four of them for $180 so it would be a whole lot cheaper than that $400 mercury job 8) , especially if I can sell off the other three .