Recommendation For Small Block Re-usable Valve Cover Gaskets?

felpro 1646 are well worth the $44. They are ultra thick with a steel core. I have had a set on my solid roller cam 408 for probably 15 years. I check lash 2/3 times a season. I think i even clearance'd mine a little bit for a super victor intake paired with some thick flange fabricated alum valve covers. Still seal great. i personally prefer cork to rubber, and these are double thick cork with a steel core. can't beat 'em