i went to dodge to get a heat riser flapper and they told me its not avalible any more, they said I need a whole new manifold, witch is not avalible, Where should I look next? or what should I look for, a new manifold, (mine is only 5 years old and no leaks besides the shaft for the flapper) or should I be looking for the heat riser ass. ?

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1979 dodge sportsmen camper van

Afraid I can't help, but I'm in exactly the same position so would like to know also!

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1960 Plymouth Belvedere 4 door sedan
Stock 60 225
Push button 3 speed Torqueflite
Right Hooker

Mopar OEM on Ebay

Rock Auto also carries knockoffs for $144, although you can probably find them cheaper elsewhere.

You ever come down to Sacramento? I can give you one for $10.

Check the parts for sale section in here. I got one off of cliff for $65 shipped in pretty decent condition. He had another one left at the time, so maybe he can help you. If not, your best bet may be ebay. It's a pain in the ass sometimes, but you can get a new MOPAR manifold for $150 or so. I must have lost about 4 bids and couldn't wait anymore for a new one. Good luck.