i am the one that put the bug into his head about the L-67 swap. and to be honest it is not as bad as what it being made out to be.
the first resource http://www.l67swap.com/ it is not that exact URL anymore do to changes, but it can and has been done. motorswap.org is what the banners say on that sight now.
there is a 96 grand prix in the twin cities area that has had the swap for years now. drives it races it and shows it. there is/was a couple 95-99 monte with it done as well. they were somewhere in MN as well.
not to forget if you hit up www.clubgp.com there are a few on there that have done the L-67 swap into various GM cars. from fiero's to cutlass's, prix's, even a ciera had the swap done to it.
so it is possible.
that first link though should provide you with alot of good info as far as what is needed. might even score some help or info on a Monte forum.
not saying a newb can do it, just saying it can be done and is not as bad as what it is being made out to be.
Monty