yea, really, I havent saw one of those in years. your best bet would to try e-bay or contact some bike shops like Dans Comp. and see if they could help ya out.
i remember back in the day the only person i ever saw ride a hawk was this wierd 40yo guy that used to try and hang out with us named eddy so i instantly decided to never buy one of those frames dude creeped me out but i might beable to find one for you. do you want a cruiser or 20"