Anyone use the Billet timing cover from ARE engineering solid Roller ?
It is an excellent cover that requires no machining to bolt up to your block. You just have to be smart enough to chose and set up the proper spacer to set the cam thrust.
Of course you don't have to run this cover for a roller cam. You can use a dozen other covers and wrestle the cam thrust on all those too. This one is my favorite and is the easiest for me to set a firm cam thrust spacing.