Yes Davey, MX5 with a removeable hard top and rust free bottom would be a good alternative.
Paul has had (I think) 17 cars in last 18 years, so my guess is that once he becomes attracted to SC430, his 3K will become 7 or 8k !
We watch with interest.
Alan, I am not knowledgeable enough nor qualified enough to be able to answer that question.
Herbie will be though and I`m sure he will if he reads this exchange.