there's not a NAPCO forum because there's so few of them around it wouldn't get any traffic!! you might be able to convince Peg to add one, but it'd be like the radio or doors or bed forums - lotsa chatter for a couple weeks, then one post a year
there is a {url=http://www.napco4x4.org/]NAPCO-specific site[/url] where you'd find lots more info
Bill