Jplayer- no disrespect, but I believe this lift is fitted with an impco model J system. This regulator has no diaphram between LPG & coolant, the coolant runs through a cast channel in the regulator housing. It also won't pass LPG until a vacuum is sensed in the supply hose.

I believe the regulator your thinking of is the old Algas (which Impco now owns) regulator which worked & is assembled in the fashion you describe.

As far as the mixer, you'll need one specific to your lift- bore size & linkage assy's are model specific. I'll check on the part # for your application