defroster hoses

Personally I would go with the size hose that fits the heater box and make an adapter for the dash vent end.
I used electrical tape and taped the crap out of the hoses on the dash vents. They'll be there in 100 years. fffff spendin money when you ain't got to. On something "correct" that you caint see? puhhhhlllleeeezzzzeeee. lol