After a loooong time of not being able to work on the car, yesterday -finally- I managed to tighten the last screws and reinstalling the serpentine belt. I have not refilled/replaced fluids yet, but she's almost ready.
Putting together the things didn't take that long, but the heater pipe gave me problems to insert it again -of course-. I think the o'ring got damaged in the process... but we'll see.
In any case: when I was cleaning the mounting surface for the throttle body, I found an area around the water passages that was very brittle (guess how I found out?). The thin "lip" that holds the gasket from the wet side broke for maybe 1/2". Since it's on the wet side (under pressure) I'm not sure this would be critical, but there's some chance the gasket will not seal correctly. I applied some black silicone in the area as a precaution, but there's some chance I'll need to replace the plenum in the not-so-distant future
I'm starting a separate thread about that for clarity. I'll keep you posted