cameo,
congratulations for owning and installing an original radio. In my opinion you will benefit from installing a capacitor on the supply side of the coil and also one on the armature lead of the generator, either at the regulator or the generator. The interference is most audible when receiving weak station signals. I use the same condenser that is used in the distributor.
The antenna is normally installed on the driver's side cowl. The location is very specific because if located wrong it will interfere with the hood opening. If my memory serves me right there is a reinforcement built in to the cab structure to anchor the antenna.
