auto to manual

Aye, by quite a large margin. I suspect it'd interfere with the clutch pedal.

I don't have anything to part with, but if you want to go for a pick-a-part run, I'd be down.

I don't have long to type, but I have done this swap, my original 85GT that became my first V8 was an Auto and I converted it to a stick.  Do yourself a HUGE favour and find a donor car.  Its really the only easy way to get all the parts. 

The Fiero 5spd shift cables alone will cost you as much as a wrecked car by itself.  Last time I checked the going rate for a set of Getrag cables was about $400 bucks, ya ouch.

     However I have seen complete Fiero's with bad motors for the $500 range.  A little harder to find a Getrag car but they are out there.

If you do decide to go the parts route, I can probably set you up with about 1/2 of what you need.  Pedals, axles and such.  Assuming you did not delete it, your remaining Fiero harness will have the plug in it that goes to the Getrag trans for backup lights.  I found it faster to just rewire the Start switch and bypass the auto bits in the harness then to replace a bunch of stuff that did not need replacing.  Note this does remove the clutch lock-out safety switch so you can start the car without pressing on the pedal.

      I won't be able to really do much digging around until after the holidays though.