Need Vented Gas Cap - '73 Charger

[Jecarroll7]

Hello,

Just picked up a '73 440 Magnum, pulled it into the garage and smelled gas the next day.

The 4 vent tubes at the top are not capped. It also has an aftermarket Edlebrock FI carb, using the side vent as a return line.

After reading several of the posts here I've decided to try and cap all the open vents and use a vented gas cap.

Problem is, I'm having trouble finding one.  I don't mind paying extra for a locking cap like a Slant, but so far I haven't found one that is vented.

Any ideas?