'68 318 to carbed Magnum 5.2: Check my checklist

sireland67 said
On your upper hose, just trim the shroud some and cut a small section of old hose, zip tie it around where it may rub, this will protect the hose from getting a hole in it.

This is actually an OEM solution,to such a situation. GM has done it, I know of. ( Wouldn't doubt other manufacturer 's as well..).