Rear main is fixed and leak seems to be fixed. I had a coolant issue and found out that the engine shop didn't put an O-Ring on the coolant hose that connects the block to the thermostat. So seeing as the O-Ring i'd used out of our case (not an oem ring, but one that seemed like it would work) held tight on the thermostat side so I used the same blockside along with some white grease to help it slide in and hopefully take. IACV isn't working again but I had it working for a little bit.
So I have a question to the community,
My brother said the coolant lines to the IACV were more for northern places where it could get cold enough to freeze it with the air coming in and that I wouldn't need to cut and add lines to get it working proper, nor was that part likely enough to get hot (again, all according to him) I removed the mesh filter (per his suggestion, it was totally filthy) sprayed some brake cleaner in there and that fixed it for a little while. Now it's back to the like 500rpms almost dead idle to like 2.5k-3.5k fluctuating. When it was working right it was steady at 2k rpm which is a little hot but my brother said it's likely a result of the fresh rebuild and the ECU/motor just kind of figuring out how to work together.
Any other suggestions based on that as for how to fix the IACV?
Besides these things I'm getting it ready to drive ^^ slotted and drilled rotors (for the front this time lol) came in and I should be able to have everything in place to drive it home soon.