Sure. Although the choke will at the very least, need adjusting if you can get it to work at all. You might need to adjust and/or re-jet the carb as well. But assuming that the carb is good, you can just bolt it on and it WILL run, just no telling how well it will run. I've done it before with no mods to the carb and it ran just fine. Other times, I had to fiddle with it to get it to run right. Since they are both 307's, chances are it will work just fine other than the possible choke issues.
Yes
Yes it will, if the 350 intake is from a pre-1987 engine.
right front, left rear of intake manifold. most engines are equipped with correct stamped steel brackets for this purpose.
Yes.
Intake manifold at top of engine?
No. They are different engine blocks.
From the factory, YES.
The map sensor for a Chevy 5.3 liter engine is on the top of the intake. It is at the back of the engine.
On a small block Chevy the distributor goes through a hole in the intake manifold. On a Pontiac the distributor goes behind the intake manifold.
Yes it will, if the 350 intake is from a pre-1987 engine.
intake manifold
On a non-TBI engine, Yes.