Jimmy where did the road cars put the radios? Did they have them? I use to repair 8 tract units, the radio 8 tract combo's are monster in size. I think they would match the weight of your motor.I even worked on some 4 tract units, bet only a few people can remember them.
Ah, the old "Madman Muntz" four-tracks!!! I remember the slogan they used.."You get More with Four!!"
Where does the radio aerial get mounted?