Sorry, the rules provide that if you modify equipment, you become the responsible party for obtaining certification. The rules provide that no one can sell uncertified equipment if the rules require certification of equipment used for that service. Finally, the rules require that CB transmitters be certified and a CB transmitter is a transmitter that transmit on the CB. Doesn't mean that the FCC will do anything about it if an Amateur licensee sells to another licensee, but it is still a rules violation. In my experience, the FCC is only going after people that move a lot of equipment because it is more efficient than chasing the individuals transmitting on frequencies they are not supposed to. What the FCC is deluded into believing is they cannot lose, and when a court issues a decision declaring 10 meter radios legal, you will find qo meter radios in every truck stop across America.