You can include photos within your forum messages or add them to the photo gallery in your member profile area. I can't describe how to do either without going through the process as a test and remember or write down the steps taken. It isn't too hard to do and as far as I know you can't screw anything up on the website if you don't do something correctly.
I can't think of how a '42 Poncho looks but as far as I know they all had Indian hood ornaments. I used to own and drive a bone stock '38 Poncho.