W2 Head Flow Numbers - Need Advice

Man in really thinking the PO really got ripped off (which really I got ripped off too). Someone charged him who knows how much money (he told me quite a bit) and then half assed it or something and fluffed up his flow numbers.

With the conversion, mine are 258 cfm with the superflo numbers. So if 233 is out of the box, then they've had some work but it looks like there's room for improvement. I guess the big question is will it be worth getting the heads ported more to achieve my goal? I'm thinking probably but let's hear your thoughts.