I'm using the wood buck as a reference as the buggy I'm making it for is out of the country in Tonga...I have access to other buggies but they are an hours drive away. I saw Ron Covell do it on one of his Videos..and it worked for me on other projects...seems to be a good way to make your card board templates, if it's something totally orginal, if nothing else.
These pictures are the inspiration for the stainless roof
This is a PC render in paint on the actual buggy

The actual piece will be more shapely as you can see by the progress so far.
My biggest concern is the stainless doesn't buckle up beyond repair when I weld it up.