You absolutely need to lower the subframe a little to get the trans out. I tried without doing so and couldn't get quite enough room.

It's only a handful of bolts and not much else work. It'll save you a bunch of headache.

 

Solid contribution to the thread

0jimmiesrustled/10

 

Which LS are you thinking about going with?

 

F body LS1, pretty standard fare

 

Nice, we have been batting around that Idea with our car for awhile. Turbo LS does ring a bell..,,