I have the Jeg's 10 percent underdrive SFI dampner and hub. I'm very happy with both, as they are high quality items.

Initally, I used the Jeg's dampner on my stock GM hub, then later added the Jeg's hub w/ woodrif key. The Jeg's machined hub is an udgrade over the stock casting three spoke. So, I would guess the stock dampner would also fit on the Jeg's hub.

WD

 

anyone have any pics of this set up?

 

I purchased one for my 97. Very similar to the stock dampner, and, for internal balance assembly. Worked very nice with my D1 7.6" dia pulley. Had to machine a small pilot spacer. It fit the stock crank hub, and, I used a larger ARP dampner bolt (head collar). My experience is... it is difficult to engage a key on the crank when assembling the hub into the time case cover. Did not work well.