Definitely not a deon chassis. Looking at it, it looks like a second gen classic replica's chassis.I know cr used a deon chassis at first as I met GA when I went pick up my deon kit. He showed me a chassis he had acquired plus moulds to produce the shell. He said deon owed him money and he was holding them until he was paid!!!! The chassis was identical to the deon one I collected.
Your wishbones look identical to mine. What I'm after is the chassis pick up points from one side to the other, I'll try and get a photo of what I mean from my mock up chassis. Thanks for the reply