Piecing the 87 745 turbo back together, and have a few questions.

The AC comp bushings are new poly pieces, but I am still not satisfied with my solutions for there orientation. Can anyone tell me which way the shoulder faces on them? Toward the bracket, toward the bolt?

The hoses for the heater core, does the upper one go to the pipe from the water pump or to the block? Does it matter? I believe the valve goes in the lower port yes?

On LH2.2, the TPS and the IAC motor are both 3 prong sized plugs, but the harness plugs, while physical identical, only one actually has three pins in use, the other is only two pins used in a 3 pin housing. I'm pretty sure the 3 pin goes to the TPS, since it has a closed and full throttle switch, and the two pin goes to the IAC. However, running them that way it's a very tight stretch to correctly hook up the alternator and starter(which are easy to tell which is which since the starter stud is larger and has a correspondingly larger ring terminal on it.
Am I right about which plug is which?

Thanks much..