So you swapped that big block into your '37 Ford, got the radiator in place, and then you came across a little problem: what are you going to do for radiator hoses? The stock ones obviously aren't going to fit, I suppose maybe you could try bending them out of sprue but what about when you have a bunch of tight bends to make?
The soloution: solder wrapped in black (or, any color if you're into that) heat shrink tubing.
Simply cut a piece of solder a little longer than you think you need- you can even mock up the new hose before hand then straighten it back out. Put the heat shrink tubing around it, shrink it, then bend it back to the shape you need.
Not only does it let you make hoses in whatever shape you need, it looks good too!