Any ever seen this intake ?

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Link doesn't work but the #'s are good. Looks like an M1 duel plane manifold. They may have paid the $175 marked on it.
 
not sure if it is an older one or just a different casting, but both of mine have tapered slots instead of that spread bore design. I've seen them sell on craigslist for $100-$150 used, would not pay his BIN price.
 
That is the one I used to see pictured all the time and then it changed to the aluminum version of the 340 AVS like intake.

That one looks alot like a Weiand Action Plus.
 
I think the first M1 dual planes were virtual copies fo the '71 Tquad design, with a little bigger ports. I do recall they made almost no more power but were lighter. If I remember right they had the T-quad mount which was why a lot of guys ran the Performers instead.
 
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