73 duster vented gas tank ?

j_anderson said
if you don't want to put back the correct charcoal evap system/components, I would say, just add the valve to the vent line in the engine bay and connect the hard line to the vent nipple at the tank.

Do you think it would be okay to mount that vent on the firewall instead of out front by the fender , it would probably look a little better