Since the engine bay/front frame is essentially the same, I would consider checking out some LSx swap on the naxja.org forums. Frank Z and John D come to mind for this.
I as well, plan on doing some sort of LSx swap. Unless I end up building something, which may happen down the road anyways, I really would like to start with a 6.0/6.2L truck engine, LSx car style intake (stock, or FAST if I can afford, there's a vendor on pirate that has some awesome, high clearance oil pans), 6L80 6 spd auto would be awesome as well, novak headers, engine mounts, possibly rad, etc.