I'm working on a 68 Dart with a 70 slant six block and an unknown radiator, definitely not a 68. I ordered a lower hose for a 68 from Rockauto. I had to wrestle it into place but it fouls on the fan belt, no way to adjust it out of the way. It's a non-A/C, auto trans car. I have the old hose that I removed which did fit but it has no markings or numbers. Thought about bringing it to the parts store and trying to match it up to something. I don't want to use a 'universal' hose. Any ideas?