[PeteVS]

OK. It's been awhile and it's not exactly like I remember.
First pic: Plumbing from old draft tube location to carb. It's 1/4" fittings and there's an elbow due to distributor. Valve is "Standard V100". There's a steel tube from grommet to hose not quite shown.
Second pic: Fitting at base of air filter. There's a 1/2" pipe coupling with barbed fitting at one end.
Third pic: Portion of electrical fitting into other end of coupling.
Fourth pic: Tubing connects to oil filler pipe.