Thats the one David ..THANKS
My first C8 was Z4544183.. close to that one pictured
David in Texas: To make the sides , you will have to make up a small press using scrap metal and a auto bottle jack ... bolt this to your bench .
First , fold up the sides and for the top edge , fold in the basic L shape as per the drawing , but without the curved section .
You can make a simple die from a 12" length of hardwood , or metal, your choice ... It only needs to be 12 " long as you go along and press down onto it slowly astep at a time along the whole lehgth of the side panel.
Slide the die into the L section you formed in a folder, and go along and press a short length of pipe down onto the die .... the pipe needs the correct diameter for the curve .
After its done, hit over the short edge per the drawing , again you can use the same die , if its made to the correct dimensions .
As its only 1.2mm guage your using , its pretty easy to do this job
MIKE