i now have two m62 superchargers and planning on putting one on. its off a 94 bonneville. the other supercharger is for sale. This is what i got so far and please list what i need yet.

m62 supercharger+throttle body
fuel rail and injectors
I can get the Lower Intake Manifold and computer
Im not worried about the belt yet...
Also not worried about the trans yet but what would i need to make it HD?
Not worried about the gaskets yet either...

Check this thread out and see if it doesn't help answer you questions https://www.gmforum.com/t279634/

yea i mean it helps but do i really need the l67 heads?

I don't believe the LIM will line up right with the heads.

So what would i all need other than the heads and the things i listed above? Is there a walk through on this forum?

Sure is, go back to the 2nd post in this thread.