LS series motor mount options for 72 K10

[azsmokey]

Hey guys,

We are in the middle of installing a 6.0 in our 72 K10. We ordered a set of motor mount plates from Street and Performance (AKA Hotrodlane.com) and they will not work with our motor because we want to keep the AC. This motor came out of a 2003 Silverado SS and we are going to keep all the accessory drive as is. The plate hits the AC bracket on the passenger's side of the block.

To those that have installed LS series engines in 67-72 trucks, especially the 4WD models, what mounts/plates have you used? Will the CPP tubular supports work on the 4WD? What other options are there out there other than plates because the Trans-dapt plates look identical to the S&P parts?