chimmike said:if he offered to do it for $30, friend or not, I'd be wary of the quality of work he does
Basically, let me put it to you this way:
Unless you've done every n/a mod available to us already, including intake, header, exhaust, crankshaft pulley, grounding wires, SAFC, ES motor mount inserts............it's not worth doing.
Your best bet is to pursue those mods that I listed first, because only after those will you really be able to take full advantage of a real port and polish.
Oh, and to put it in perspective, the work your friend would charge you $30 for usually runs over $1000 from most reputable shops