G'day gml,
Yes, that's worth the effort. Will be some effort, but worth it!
I say this based on some research and assumptions that I've not yet shared on these pages. In a nutshell I believe that's the FIRST model greenfield!! Note the straight thru chassis rails, the piano style hinge on the cowl, the front axle pivot is made of box section and under the STP sticker will be (or was) a round style gear motif and 'G' sticker. Also, the transmission cover under the seat is different, thicker drive chain etc.

I've only seen two others. One is a photo of a restored one that lurkes on these pages the other.......I bought in very serendipitous circumstances a few weeks ago!! Astute readers will recall me discussing having to unsieze a couple of flood damaged engines in another thread. One of them is on this machine.

I'm at work and should get back. I'm keen to discuss this one further! Especially interested in the green paint on the cowl. Mine has green on it also but is certainly a brush job done later in its life and had assumed it should be all over red - but I'm beginning to wonder........

Mine has a G40 (or is it a G45?). I'll check when I get home. I'll also try a get some photos happening. It's a pest for me trying to get photos to this forum. My iPad doesn't like it so will need to use my daughters laptop.

Excellent find!