If I remember correctly I think you have to remove the front engine mount (or at least move it out of the way) to get the pan off. So with the engine in the car you would have to support it from the top, remove the mount, remove the pan and drop the crank to get the pistons out, all whilst lying on your back under the car.
Good luck with that (never mind the fun of putting it back in)

Provided you have somewhere to work the only thing you really need to get the engine out is some sort of hoist to lift the car. People have been very creative on here making them out of 6x4's, even a tractor front loader! You can even do it with just a jack and LOT of patience (and care) by lifting it a little each time and blocking it in place but a cherry picker or something similar is your best option.
The only other 'tools' you're gonna need are an engine stand and a furniture dolly (to move the whole lot around once its out coz it's ruddy heavy). You 'can' work on an engine on the floor but it's not fun and stuff gets broken turning it over etc.
Anyway, once you've pulled the engine from a Fiero, you'll do it just for fun, honest!
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Dave
www.ltlfrari.com