Dunno. But I read that the 1g cams are slightly bigger than the 2g. Not sure how this might relate to our e1-3 cams.
I would imagine the 93 cams are smaller again as the engine itself is a smaller capacity
93 cams are smaller off course, but I'm interested in time and lift of cams. If 63 cams are opend for longer then there is good possibility that piston will hit valve in tdc. If they have simillar lift and timing then it will be possible to run 4g63 up to 8000 rpm