Clutch is mounted with sprocket outboard as can be seen on second photo using the original cover and looking at where chain exits the cover (also notice base of engine is far to the right on the plate). I have one of these Powersport engines but havn't yet drilled and mounted it yet, I was reluctent to bend the rear hoop for the clearence, only need about 1/2 inch of travel for chain adjustment anyway, but I like to start with as short a chain as possible to allow for stretch and slop.
The gas cap is diff from mine I have more like a Honda cap (low and flat), that looks like a screw on cap and I do not have that little barrier around the cap area for fuel spillage.