Hello, Colin. Not that it really helps but the K3 radiator shell was made from a cut down 18/80 shell. ( At least that was what Colvin Gunn told me ! Best of luck. Chris
Kevin, I wouldn’t for one moment suggest cutting an 18/80 radiator shell today, though as Colin said one could be used to make patterns. I should have made it clear that that was what the factory did in period. Chris
I am though led to believe the late Peter Gregory wasn't quite so disciplined which is one reason 18/80 ones are even thinner on the ground than they might have been.