There are other differences. I was reading an old Evo last night which contained their Performance car of the decade. Both 996GT3s were in there but the Mk1 was reported to be more exploitable and predictable, mainly due to differences in the front end set-up.
Thanks. Unfortunately the Mk2 is sold. Probably for the best as I'm not in a position to buy at the moment. I'm just keeping an eye on things.
In the meantime I'm keen to hear of Papa's progress and experiences.