here's a FR thread about whole-house gensets:
http://www.freerepublic.com/focus/chat/3533486/posts?page=72
take a look at this natural gas one:
http://www.centralmainediesel.com/order/Honda-16kw-Propane-Generator.asp?page=H04599
i got the 2-wire autostart option; seems like the low-pressure regulator and hose is now an option even though the pic shows it as part of the whole setup
here's a pic how i set mine up:
Thanks much for the helpful information.