Originally Posted by
CA1900
I have a CE-680 type rating that I got for the Citation Latitude, which has a very modern Garmin avionics suite with EICAS. But the rating was originally for the Citation Sovereign, which uses an older non-EICAS Honeywell setup. So the precedent for a common type is absolutely there.
Same deal with the Gulfstream. The GV type covered 450, 550 and classic V (a dinosaur). We flew all 3 types, sometimes in the same day. Differences training should be enough.