[OrrieG]

When I ran my stock heater I went to the parts store and found one that was the same size with outlets on the same end. I soldered on some elbows thru the firewall and used an inline control valve. Cannot remember what worked (it was 30 years ago) and that was when they had catalogs you could thumb through, cross indexed by model and size. I know the local NAPA store was told to toss their catalogs when they went to a computer system, but one of the guys stashed the old ones them under the counter because they get so many guys like me showing up.