Heater System upgrade

I have asked this before so forgive me if you have already read this. I have a 76 CJ-7 and the heater in it
sucks! I live fifty miles from the Canadian border in N.W. Montana, and it is already getting into the teen's,
with over a foot of snow on the ground. I am in desperate need of the name, phone #, address, anything, for the
manufacturer of a heater upgrade. I know about the Blazer motor (no can do on a 76 CJ-7), and the bus
heater adapter (no can do either,12 gauge under the back seat for Bear). I am looking for a certain heater
upgrade that was written about in either Petersons SUV&offroad,JP,or some other mag that I subscribe to.
I can not find this article for the life of me and I need the help of the jeeping community. Please, if anyone
knows of the article let me know before your fellow jeeper here turns into a popsicle.