Steve/ Bob, Richard/guys:
good discussions. Head protection is what got me going on this subject.
I have sat in the Cobra seats and noted the lack of support and protection.
I've researched their origin and I have it from good authority that ole CS, Mr's Austin and Cooper had emptied a keg of Bitters while discussing seats and in a heighten state of creativity sawed the barrel and half and then quartered it and said "slap a little vinyl on it and it will satisfy those Budweister swiling Americans"
My chassis has a dropped footbox and I have fitted a Miata seat; too high with the built in head rest.
Acura Integra seat and a Ford Escort barely fits widthwise; but are quite short and come up about even with the rear coaming.
I'm thinking of using this solution; without headrest; seat looks "reasonable stock" with the head rest installed; acceptable protection from the roll bar and rear whiplash.
At least that "today" solution.
gn
