Does anyone know where i can find a M1 intake manifold for my 360 magnum. I have looked almost everywhere and cant seem to find one??

 

They are no longer produced. They occasionally pop up on classified ads on web forums, eBay, craigslist, etc.

 

Do you know if anyone has a used one for sale. I don't really want to go with the Hughes. Are there other alternatives or ideas??

 

So far as I know, the Mopar unit, or hughes, are the ONLY choices for magnum engines.

Your best bet is to just do a google search. They occasionally pop up here in the classifieds for sale, but, they are becoming rarer than hen's teeth.

 

Some reading for you.

http://www.allpar.com/mopar/performance/manifolds.html