Everyone's version of "nice" is different. Generally, low backpressure glasspacks tend to give a nice, deep rumble. The amount of sound is dependant on the length of the glasspack.
Maybe
Yes
Turpentine doesn't sound like very nice stuff to put into your body.
sounds transmission related or possable flywheel related That would be the power headlight motor!!
you can put a blower on nearly any motor
yes all 4th generation(1993-2002) firebird parts should fit in other 4th gen firebirds
NO! the Montana is a front wheel drive minivan and the firebird is a rear wheel drive, even if they were both rear wheel drive for some reason, the firebird engine would shred the wimpy minivan trans and it would be just wrong to put a minivan trans in a firebird.
Yes.
yes
put a cone air filter
Yes it is, the nova is also useable in the camaro or firebird,I put a 73 nova subframe under my 68 camaro.
The instrument clusters are wired completely different and it is a task beyond belief to change out the prongs on the wiring and get it right.