Re: m90 swap
v6power.net has a few different threads about it. Use the search option there and read up some.
Basically You need a complete engine to do the swap. Id recommend using a SC block and not your stock block. But if you wanna keep AC, lines have to be fabbed, Fuel rail is different. You'll need a bigger fuel pump. And just do all the work and have it tuned.
I know that is brief, but its a start. Do some searching on that forum, it has the most info ive seen so far.