Really, $1000? Seems a bit under market value for a monster 620. But if you're saying we can all pick up 620s for a grand I'm all ears.
I realize that the 620s are legal for PTWNs based on the rules, and that others have run them. I just don't see what you really accomplish by turning our little class into an arms race. We race EX500s. They're cheap, easily tuned and maintained, and those of us who run PTWN enjoy going out there and competing against others on equal footings weekend after weekend.
We don't mess with the other classes. We run in LWSM without (excessive) bitching about the motards. All we ask for is one class where we racers can compete against each other without the constant debate of "that guy had motor on me" or "he's got more money to sink into suspension/tires/etc".
Like I said, you're more than welcome to compete with an EX. It's a fun class and I would encourage anyone who has the notion to do so. But if you really feel that the monster 620 has an advantage over our machines (and it may, I don't really know one way or the other) ask yourself why you're really doing this. Are you attempting to join our little weekly race and pit yourself against other riders in a class of skill? Or are you trying to exploit some technical rules loophole in order to gain some silly "advantage" by purchasing and outfitting a bike that would cost more than most of us are willing to spend on our little racing hobby?
There's no money to be won in PTWN racing (or any club racing to be found). The only satisfaction that I've found in racing was from beating other riders on equal footing, knowing that their machine was equal to mine. What would you really gain from trying to "tip the scales" in your favor, running a bike that you felt was superior to those that are commonly run? Certainly not respect. If it's respect your after, there are plenty of EX500s for sale; feel free to purchase one and run it in your race for the glory and admiration that comes from being a PTWN champion