Thanks Brookester! I did do a rego check but a Google search for a 1922 Silver Dodge Roadster bought up a completely different car to that in my pic: https://tinyurl.com/yx6ctcpv
So, it's apparently a 1922 Dodge chassis with a '25 flathead 6 & a '34 Dodge nose...
*UpdateThe owner has responded to Sue's post on "Speedsters Downunder" and had this to say...Car is not that cold to drive but I do admit going to Garfield at 0° is challenging. I did wear gloves that day. Car runs 25 inch side valve. Dodge engine 37 gearbox three speed 37 front end. Four-wheel drum brakes hydraulic.Car was built to do like Lake Perkolilli but was knocked back because I’m running a post 1940 diff. For good cruising speed I did plan to drive there. Bad luck. Car was built to represent a mid 30s race car. Body was made by myself, car is an absolute pleasure to drive even on cold days.