A good quality copy of the later type Petter 11 litre fuel tank complete with a cast iron mounting bracket and tank straps, could be used for any engine in need of a well made fuel tank.
The tank has a 1/4" BSP female threaded union on the bottom at one end for the fuel take off and a 1/8" BSP banjo style fitting in the top for the injector bleed off return pipe. This could easily be blanked off if not required.
Approximate tank dimensions are 12" by 13" by 6.5"