Super Jet Any 61x single carb a/m manifolds?

Quinc

Buy a Superjet
Location
California
Anything out there besides the Wetjet? Or is there anything you can do to a stock manifold to get more hp? I tried adding some stickers but I don't think it helped.
 
I've seen the stock manifold milled 4mm at carb flange to lower carb/ reduce intake volume. I've also seen about 4mm removed from the base of the top half of the manifold to do same. Never tried it myself, so nothing to report on how effective this is.
 
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