Bill, you could try Sid Watson 01354 658260.
I had a long chat with him once about hardtops and I'm pretty sure (if memory serves) that he could have helped me if my car hadn't been so young (long door, latest hood etc.)
This conversation took place about 4 years ago before the factory made the latest hardtop (which I still haven't bought....)
It's worth a phone call.
I did remove the wooden rails and replaced the seatbase foam with memory foam. By leaving off the rearmost fixing clips the seat was lowered considerably - memory foam so much more comfortable; makes driving much more fun too. I bought a cheap mem foam pillow - more than enough foam.
nick
