Dumb Fuel Hose Question

[mattfranklin]

The stock fuel line for my 1970 C10 is 5/16", but the fuel pump inlet is 3/8".
This is because I'm following the 1970 Corvette/LT-1/Z-28 stock specs for my parts.

I'm kind of a hack sometimes, so I know that I can probably just use a 3/8" hose and crank down on the hose clamp on the 5/16" line end. Or possibly I could stretch a 5/16" hose over the 3/8" pump fitting. Or I could make it ugly and put a double barbed adapter in the middle with one for each type of hose. I think any of those would work, but I'm wondering... Is there an existing molded hose available that would have a proper size for each end? It only needs to be around half a foot long.

Maybe I'm overthinking this and the 3/8" hose would be fine, but I did have an engine fire about 10 years ago so I'm a little gun shy about any risks under the hood.