Today 4/10/17 went pretty smooth using Michael Schumacher's creative services engine conversion kit..
Definitely worth every dollar for the convenience and high quality. I highly recommend them as he has clearly got his setup perfectly engineered and simplified.
I purchased the /6 to RB engine mounts, Ceramic coated headers and torque strap. They made it easy... I got the 440 motor completely installed in about 2 hours flat including both exhaust headers