6v to 12v step up converter

Have you tried AMS Obsolete? I refuse to believe no one has one. Somebody out there does.
I have been all over the web and various sites without a replacement. Tbe rad shop specializes in old cars,he has not found anything either.

The problems are where the water tubes are located, and they are shaped, threaded pipe threaded into the core also is threaded so that large nuts attach the heater to the firewallIMG_1571.jpeg

Thanks for the lead. I think I have checked it, but I wii go there. IMG_1570.jpeg