Awesome build thread! I have a question from your early phase of the build years ago. I looked through, and didn't see any pictures or post about it, so hopefully not a repeated question.
But using the ICT billet motor mounting plates and locating the engine in the stock location due to z-bar constraint, did you have to modify or notch the stock engine crossmember at all? I am swapping a 6.0 into my k20, leaving sm465 and mech clutch linkage for now. But can not find a solid answer from someone that has gone this route about any engine crossmember interference. Thanks for any advice!