I'm happy to report the trans/clutch/bellhousing is out, everything being cast iron along with the parking brake drum made for an interesting controlled decent but no damage to humane or machine. I estimate this combo is 250 lbs.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy