ECE Late Model 4.8 5.3 6.0 Engine Mount Kit

[mcmlxix]

Has anyone seen these? Used them? I am contemplating a 6.0L/4L80e swap for my 71 SWB with a Painless Harness and maybe these mounts. I sent ECE an email. They say "Slight frame modification may be required, depending on application"

http://www.earlyclassic.com/ProductI...II%20MOUNT.JPG

63-72 Gen III Motor Mount Conversion Kit (Kit)
Looking to install a late model Generation III engine in your 1963-1972 C Series Truck? Early Classic once again leads the way with our new Generation III Mount Conversion Kit that allows you to bolt in a 1999 or newer 4.8,5.3,5.7, or 6.0 GM engine directly into your engine bay.