S13 intake manifold help

[imoverherre]

so to start, I did search for a couple hours and still don't think I got my answer. Also I'm very sorry if this is a noob question, but I got to get this answered ASAP.

I bought a 89 coupe shell and installed a 97 ka that was ready to drop in a s13. It ran perfect till one day I deleted my ac system completely. As for the two hoses that attached to the heat core thing I just plugged them together. After I did this, three days later i blew the head gasket out of no where. Wanted to know if that's the reason why?

Now my other question what do I do with those to hoses. I'm asking because I just got pick up another s14 ka and I'm deleting all my emission stuff and egr system. Finally it be nice if any of you have like a diagram of all the lines of the intake manifold or a picture of how deleted everything on yours.

Also if I could just delete that whole pipe and just weld it shut would that be fine?

Ps: I followed the write up on this on nico.com but I'm still lost a bit