Mostly, the stock 282 parts worked out as far as the mounting was concerned. The brackets were a "bit" off and some mods with a welding torch was needed but nothing major. You can also get the full, pre-built mounts from ACE Engineering
About the tranny...
This is the only part that is an issue because the STOCK fiero axles have to be mated with the STOCK 3.4L TDC (or DOHC) axles to work properly.
The tranny's output or out drives need to accept the 3.4L TDC axles so that portion is disconnected from the 3.4L TDC axles and combined onto the stock Fiero axles.
Not hard to do, just needs to be done. Of course, that means getting the stock axles from a 3.4L TDC as well. They are basically the same but the spline count is different so it has to be done this way.
The rest is cake. Ther shifter braketry is changes some but I can't really explain it to you without pictures. It just mounts and locates the cables in a different direction is all. Again, ACE sells the brackets or you could probably work it out with a "heat wrench".
Forgive my vaugeness... it's 1:14 AM here and I didn't get any sleep LAST night either

Bear with me and I'll get some pics and answer a bit better if I can

DKOV -