She fits great! Way more spacious vs a Hemi. I would tend to agree with you that when starting with a tubular k member, the LSx swap will be cheaper. Let me know how yours progresses!
Bill at RMS even makes mounts for the LS, he doesn't show them on his site but if you call he has them. I think that any LS headers that you could get your hands on should fit and any oil pan should work as the front of the suspension is ahead of the engine.