Thanks Ian,
Thats made me feel a lot more confident. I may go for the Gurney bubble as well for track days with a helmet...
Can't seem to find any Dax GT40's around so much these days which is a shame. It seems that GT40 replicas are, in themselves, the spirit of the original, and if the original was modified over the years for road / race and personalisation, then there is a pretty wide scope and leeway for the replicas, which is great in my book and gives good justification for the newer replica manufacturers to introduce more comfort / ease of use without losing the identity of the original. Hell, if Ford can do it with the GT, then so can we!
All the best,
Graham