Thanks Bob, Keith and Tony for the input. This is a tricky one...more photos of that apron would be greatly appreciated if anyone has any.
Went up to Max's to deliver some very nice tyres. Took some photo's of the two 12 Cabs Max has got but we are none the wiser...other than to support Keith and Bob in so far as the curve appears to be much greater on an apron Max intends to use for his 2WD 12 cab. (Engine sounds awesome by the way)
The apron on the F60L of Max's has the same issue that mine has.
I did however find a gem that I will make a copy of and return to Max. Although as I was leaving there seemed to be a change of heart from the owner.
Something I said???