Yes, providing that the unit has been functioning normally, SEA can upgrade and convert the MST-67A transponder as follows:
MST-67A P/N 066-01143-0301 to 066-01143-2101 = $9550 USD
MST-67A P/N 066-01143-0601 to 066-01143-2101 = $9550 USD
MST-67A P/N 066-01143-1301 to 066-01143-2101 = $9550 USD
MST-67A P/N 066-01143-1602 to 066-01143-2101 = $6950 USD
Prices are subject to change should cost of parts needed change from OEM.
For a repair RMA or questions about any transponder service, please contact the SEA Repair Department.