I just emailed Hoppy if he needed it since he sent me some parts. If he doesn't its yours.
2 1/2" connection to the dash vent, no latch.
2 1/4" inside for the heater box, with latch.
Same dimensions as my 67 but lenght I think is too short for the driver side vent.
Also hose is a rubberized fabric. My original hoses are some sort of paper product.