It's scratch built Charlie. 1/3 scale, full pressure oiling, complete cooling through block, heads and intake manifold, electronic ignition with Hall trigger.
The block is aluminum with wet sleeves, the crank is ductile iron, the heads are iron with stainless valves, the intake is made from 2 pieces of brass and silver soldered together. The pistons are aluminum with 3 iron rings, 2 compression and 1 oil control ring.
gbritnell