Round port possible new idea

[jj53913]

So I have asked a tone of questions so I'll ask one more. The box is 11.6 gross and I am putting a solox 18 in it. What size and how many round ports would you use?

[jj53913]

never mind I went to the local place to get 10" pipe and it was 3.50 a foot whick is cool but the 90's were $67.40 each and I think I could do a lot of other stuff for a 150 buck so no bouble 10" ports