He (dsc motorsport) has a lot of items on eBay including a set of Erson rocker assemblies for standard heads. If using the Edelbrocks, you have to disassemble and rearrange the spacers.
http://cgi.ebay.com/ebaymotors/Ford-...QQcmdZViewItem He normally includes an auction for the ones to fit the Edelbrocks, but doesnt this time indicating he may be out(?) If interested, you might as well do the buy it now for $685, as the reserve will be something like $684. This is how I got mine a few months ago. He seems like a decent kind of guy (communicates well as far as email, I have tried phone before w/o much luck), maybe he would be willing to swap around if you have Edelbrocks. Shipping seemed to be around $25, and that was coast to coast, and was shipped quicker than most at half the distance. I have got to find someone to machine out clearance on my stands for the head
studs, since they are only designed to clear head
bolts.