I was searching for a replacement mast for a Harada antennae (the kind used on the Deloreans). I contacted Harada directly and have been told they are no longer providing aftermarket services. If you have a major brand they will still provide the parts to the dealers and their parts networks (like car dealers). What this means to us is that once the parts inventory is used up Harada will no longer supply. They told me PEP BOYS has a large inventory right now. I think we have to find a replacement for Harada for the long term. In the meantime I am looking for a black replacement mast, I think it is an RX-20. The other # is have is PRXMB-5. It is supposed to be the replacement mast for the Harada MQB-2 power antennae? Also there must be someone else's mast that would be a direct replacement? Does any other list member have info on the power antennae? David Teitelbaum vin 10757