this is a pretty tricky one - not many people are in a position to compare these directly. Is your car a turbo? I'm going to assume it is, for no other reason than I have one.
Now turbo's have different drive shafts to N/as, but I think the differnce is the gearbox end, not hub end.
I also thing the ABS sensor is on the drive shaft too, so ABS being there or not may not affect the hub itself.
So you need to find out if the hubs changed between rev1 and rev3 for you to do this exchange?
The link below is a rev3 turbo EPC http://www.ayrpark.plus.com/epc/mr2epc.html and buried in there somewhere should be a very detailed picture of a rev3 turbo rear hub.
Assumming you have a rev1 car, you might be able to then make a visual comaprision yourself between this picture and your car.
The only thing I can think of is the brakes were changed from rev1 to rev2 and beyond, and this may have changed how the caliper and carrying bracket bolt into the hub...
hth
Ian
Thanks for the post Ian.
Yes my car is a turbo.
Look's like i have now sourced a hub of a G-Ltd without abs.
I did follow that link but the picture of the hub was crap.
Many thanks.
Zero