Thanks, Guys,
I thought I wasn't nuts, but you never know. Maybe more info will surface in this thread?
What info I've got came off this site:
www.wps.com/LPG/
But no visible schematics to adapt a '67 Chevy 292 L6.

I/I #4101
'71 GMC Jimmy 350, sm465, np205,3.73 posi.
'68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi.
'67 K/10 454 project.
'72 K/5 rolling frame project.