Check the Inliners link.

Inliners ID

The block casting number says its a 235 from 1956 to 1962. The I 15 8 means it was cast on September 15, 1958 when coupled with the block casting number.

It sounds like a good find! On which side of the pond did you find it?

1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.