Spence - if you phone the guy - he;s very helpful , i said id like a bonnet catch area reinfoced with stainless steel sheet - he said as long as i made the bits he would fit them in the frame before the top skin goes on .
Cost is an issue at present for me, isnt christmas costly ?
Looking at a steel bonnet - all the f/g one needs is a steel plate at the centre with a least 4 captive nuts welded on - then when u get it back u can make a steel plate to hold the spring/strike pin and safety catch , then bolt it in place
The strike pin is not dead centre of the bonnet though - so some careful measuring and conveying of the instructions would be needed if you wanted to weld a nut in that backing plate to accept the strike pin-.
Cheers - Jon