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Message: <blockquote data-quote="canuckxxxx" data-source="post: 150414" data-attributes="member: 2409">Wow, you made quite a score there.   :shock: That 1/4" copper plate with holes already for the 1" pipe is ideal.  Also, a 4" end cap might be better than a 2", like I used, because it will give more plenum volume.  :yes:  And you have lots more room for making holes for the runners.  You should be able to point the runners at the plenum and run them straight in, with no 45 elbows.How thick is the brass plate you bought?  Needs to be fairly thick because that is the flange surface that the carb or 2 to 1 adapter bolted to.  With that big a plenum I would not use the adapter but mount the carb directly on top of the plenum.  Maybe you will have enough of the copper plate to make the plenum top/flange.Are you going to use a Weber 2 barrel or a Solex?  Almost need to get the carb in order to make the top of the plenum.BTW, Dan might want you to start a new thread in the single carb section for this part. :whip: Good luckBrian</blockquote>