Yeah I'll go ahead and get head studs. No machine work required for that so I might as well.
I'm going to go with the felpro 1025 because I just can't justify $200 for a head gasket especially when I've had such good luck beating up the other 1025s without a problem as well as having head studs for even more assurance.
What type of springs specs and cam did you have when turning 6500-7500?
I need to recheck my spring pressures. Don't quote me, going off of memory, but IIRC, 100-120 seat pressure & 300 lbs over the nose.
If those springs you have are at 325 lbs over the nose,, seems a bit too much, I'll ask my friend if you would like?
My camshaft is a solid lifter camshaft, is yours a hydraulic camshaft? It makes a difference.
Spring technology has come a long way in the more recent years. You can purchase springs that have good seat pressure & do not go crazy high pressure @ full lift,= much easier on the camshaft & lifters.
Good choice on the head studs. The thing that is good about the MLS head gaskets is that they are reusable, but they do cost $$$$
