Fairly similar performance Wal', but as you say on one! I flew old AMG not long after she retired as an air Ambo. Jim Hazelton was doing my endorsement and after looking around the old girl for a bit, commented that she was the same A/C that transported him from Orange to Sydney after his aortal annuism!! "Well Krusty" he said, "we better look after her, for she sure as hell looked after me!"
I know the Excaliber you're talking about sms777. Never had the opportunity to fly it though. Gotta' be the ultimate piston beech! 185 kts! Close to Aerostar speeds.
Noice!