I also try stuff on my own, I had major pain with fuel distribution in my Indy intake, so I tried different ideas and finally it works pretty good. At least plugs look very similar now. Unfortunately I don’t have a photo after final sanding, but this photo shows what needed to be done.
Frankly I really like the looks of that Indy tunnel ram intake ;-)
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View attachment 1715974804wow thats a pretty engine compartment