ok,, thanks for the input.. i will give it a try.. just half to find a good place to order one now... or do the local autoparts places have them... for a 76 302/351w..
Some do carry them (my local NAPA does) but typically those that do carry them cater to commercial shops and rebuilders..not your typical Advance or Autozone in other words. I've played heck trying to get a typical Advance counter person to even understand what I'm after.
In the world of professional rebuilders, that harmonic balancer sleeve is included in the "small parts kit" which also has a new crank key, cam gear retaining bolt, head alignment sleeves and a couple other usefull and usually hard to find bits. Those kits can be found on line..
Edit: And then there is Chicago Rawhide/SKF direct..as noted above. I buy mine that way for most applications, from the wholesale distributor that we also buy bearings and seals from.