intake swap performer loss?

actually I have a street dominator & the ports look good but the rules wont allow it. I just now brought home the performer & I'm gonna see how its height compares to the weiand that's on their now and to the iron 2bbl intake I have on the shelf. I need to find out if the iron one is a 360 one which professor said is pretty good (for what it is). milling the weiand sounds very good & doable. RR EDIT you mentioned A/C, did you mean air cleaner? no not required but I'd be afraid that that dirt track environment would eat up a engine fast.