Do those work well on stock iron LA heads with cast aluminum valve covers? I have vintage M/T valve covers on both my truck's and Duster's 360s with Fel-Pro cork gaskets but driver side VC in the truck leaks, go figure. Truck has late-70s LA iron heads while the Duster has Edelbrocks.
EDIT: nvm looks like they won't unless I fill the holes in the gaskets with RTV or something, read a review on Summit of someone using them with M/T valve covers and the sealing rib on them lines up directly with the holes in the Moroso gaskets...
