Sources for pre-09 5.7 long blocks / cores?

I also like the idea of going to a factory intake as my oil change setup absolutely sucks. The ModMan has next to no provisions for it, just a 1/4" NPT threaded port that's meant more as a breather than a fill port. I think Indy wanted you to buy their valve covers with it and use the port they put in those (at least I thought they put a port in them, maybe not). The other issue is the lack of PCV.

I've also wondered if my oil eating issues are PCV based as I had a fair amount of oil in the intake when I took it off to notch it for my A/C compressor and noticed all the oil on the back of the valves. It's possible my engine might be healthier than I think (like maybe I can save it with just some fresh bearings), but it's hard to say. I took a total shot in the dark on a PCV valve for a similar sized engine and just kind of hoped for the best. I originally tried to run a homemade catch can, but I don't think I did it very well and it was completely full of oil when I removed it. Now I just have the PCV plumbed straight to the throttle body base like a stock engine. I'd prefer to have the real factory setup to know for sure it was working correctly. That would also get me o-ring intake ports instead of the gaskets that I'm running now, which might also be leaking vacuum into the intake. There isn't a ton of clamp on the intake with only 1 M5 bolt or whatever size it is per port. With a plastic intake and o-rings I think that's probably fine, but with a cast aluminum intake and gaskets I'm less impressed.

It's kind of tempting to see if I could send the ModMan somewhere to have grooves cut to use the stock o-rings...