As I'm cursed (blessed?) with a long body and shortish legs, I wouldn't be looking at a hard top anyway, much as I like the styling of the GT6. And would probably never have the hood up on a soft top.
I see there's a Triumph / MG spares day at Stoneleigh on the 9th February. This may be a good opportunity for a browse around. I might pick up some bits for the Norton as well.
And I can never have too many cable ties.....