Ok while the site was down :disappoin did some other research on building my engine. Found a thread on Hybrid Z about improved valve stem seals on a L6 engine.

Here is the thread with some pics.

http://forums.hybridz.org/showthread.php?t=90825&highlight=felpro+ss72686

What was said is that Ford seals from a German Ford 2.9l V6 will fit the L6 engine. The part number for these are Felpro SS72686.

I am wondering has anyone ever heard of this or used these seals for there head rebuild.

Anumber of people on Hybrid Z have used them because they provide additional clearance, when used with a high lift cam.

I have a set going to the machine shop next week for use on a p-90 head with one of Mitch's regrinds.