^and had ARP bolts installed. If you're lucky the head bolts are ARP too and you won't have to buy a set.
Your rear cap isn't where the thrust bearing is located. The heads are stock 8445 castings with an exhaust leak and aftermarket springs (that may or may not be any good)
Toss the water pump and get a new one, they're too cheap to reuse. Inspect the water pump bolts carefully and look for extreme scaling and thread degradation. Since they go into water some of them can get nasty nasty. The last thing you want is to seize a long bolt into the WP and timing cover.
From what it looks like, someone in the past rebuild a stock engine, added ARP rod bolts, and diamond pistons. Then put it back together.
I would pay CLOSE attention to the lobes on the cam and see if any of them are shorter than the others. Also clean the bottom of the tappets and spin them on a piece of glass. If they aren't flattend, they will spin like a weeble-wobble. If they sit flat, you need to pay EXTRA EXTRA EXTRA attention cleaning the block. EVERY nook and cranny ESP behind the galley plugs.
