Thats because banshees rule, and 450s suck. But seriously, you may be able to pull the reeds and see what the intake looks like, but it could have a "clean-up" port, but still have the stock port timing and window heights. I have seen people pay big money, only to have had the intake, and transfers "knifed" and think they got something wicked. You would have to pull the top off, and measure the port heights, widths, ect, to know whats done. The transfers are where the magic is, as well as exhaust port height. So yea, you can find out if they are ported, but your gonna have to dig in........