Call Carpenter Racing. They do good work. They are also one of the companies working with Triumph to build the streamliner for the bonnieville salt flats trials

1200CC BIG BORE, W/WISECO PISTONS,.250 STROKED CRANK, PORTED/POLISHED HEADS AND LARGER VALVES, CUSTOM WELDED EXHUAST, DUAL 42MM MIKUNI CARBS.