Gary,
Does your 1954 Chevrolet truck have the original radio in it? If it does, you will not find an aftermarket electric radio that will fit properly with the original speaker in place.
Is your truck still 6v?
Ryan,
Does your truck have an original radio in it? If it does and your aftermarket electrical wiper works, what is the vendor and part number of the wiper?
Is you truck and/or wiper 6v or 12v?