Is anyone aware as to whether using aluminium or even GRP for the front bulkheads would be acceptable. I'd be using a floor mounted pedal box fastened to the chassis so they would not be load bearing.

you could use clingflim if you wanted.

Theres a thought

I have an MK GRP bulkhead, but I'd recomend using ali as it gives a neater finish.

Looks like ali it is then.

I like the MK one, the only thing I'd do different ,maybe would bed put an inspection hatch in to get at the pedals easily , that would need an ally one really
Rescued attachment 180_8100s.jpg