Ok I had my block I bought from a friend honed at a machine shop because the bore wear wasn’t bad and the LT1 pistons I had from another block that has been put on hold, installed on the PM rods that came with the engine (one I just bought has stronger rods than the ’94 LT1, go figure). It is a '92 crate engine built for a '79 and earlier, non-smog cars even though mine uses smog stuff since it's an '85 TPI. The heads that it came with have the port for smog in the center by the intake side. That is the only thing that the smog system needs, right? I’ve ported them out and bought a custom, dual pattern cam (I rushed myself to quickly and ended up finding a better combination of cam timing, but it’s too late to say I want to exchange it. I used Dyno2003 for my figures. Should be better as far as MPG go), and am keeping the stock crank for now because it did have chamfered oil holes and rolled fillets, but I didn’t get the block balanced because of money issues (If I end up tearing it apart I will get a eagle crankshaft and get it all balanced). ARP bolts in the rods and they are really a tight fit and ARP head bolts. Anyhow the rings that they ordered were $100 and said to be moly which I don’t really doubt, but I want to make sure because I don’t know the brand and I can’t seem to find them online (not specifically for the rings I got). What do you think? Can you tell by the pictures? Ever heard of them? Will there be any problems using LT1 pistons in a non-LT1 block? I see oil holes at the top of the piston, is there anything different about the LT1 block or assy that lets oil go up to the piston and through those holes (remember reading something about it, but didn’t fully say)?