What should I do with this CL find 6.0L LQ9 ?

[jjzepplin]

So I am scouring CL and find a 1998 5.3 with 170,000 miles, just the longblock. Lady says its 345hp. HMM. It has no pics so she sends me some. Now', I am not looking for and engine but she doesn't want very much for it. I thought I would go take a look as it might have good heads or who knows. I decide to buy it and take it home. It ends up being a 6.0. She had a box of parts that came with it like the air filter,exhaust manifolds, some bolts and a water pump and engine covers. I take a look at a sticker on the air filter and it says 2006 6.0. I look at the engine covers and the one on top says Vortec Max.
It has 317 heads so I pull one. This thing has flat top pistons and I can see the cross hatch in the cylinders still. I think it may be the 345 hp version. It has no intake or sensors or front timing cover. Timing chain has very minimal slack. The only thing I can find wrong with it is it has two bolts broken off in one of the heads for the exhaust manifold. The story was that it came out of a Dale Earnhardt P/U and the fella wanted more power so he bought a crate engine. She gave me the crate to load it in the P/U with. I pulled all the plugs and they are brand new. Looks like they may have fired a couple times. With just one plug in and on the compression stroke, this thing is very hard to turn over with a 1/2" ratchet on the crank bolt. So What do I do with this thing? Right now I am swapping a 5.7 and T56 into a 72 2wd Blazer. Do I swap em?