1974 Dodge Dart A/C Drain tube

I got my A/C repaired only to find a lot of water dripping on the passenger footwell. Upon returning home I came to notice the dismal state of the drain tube.

One of the bolts took a chunk of rust and dried rubber with it while being removed and the ring that goes against the firewall had no chance of retaining fluids.





The only Mopar drain tube I've been able to locate is a simple design with no grommet or bolts required. According to the 1974 Mopar parts catalog, it's part number 3502571.



I caked the contraption in RTV and used gasket material as a short-term measure but it's not working too well.



Does somebody out there have one they are willing to part with? :D