Looks like durabond. I should have a couple sets in on Monday if you need one. I also have in stock some stock grind cams as well as isky and camcraft if you decide to change that as well as lifters(I would).
I'm in delaware right now I started cleaning up the garage to a have "clean room" to do the tear down. Once I get back June 24th I will pull the engine and if the cam lobes are looking odd, then it will need new liters and cam for sure. I have not done a compression test, but the engine runs fines. Not as much get up as the 345, but pulls real strong.