This is a Walt Huhn reproduction " Competition" Model engine from the new dies that Tom Morrison  made  from the original Super Cyclone engine . It is balanced, custom hi compression head with the 1/4 plug, Aluminum gas tank for methanol fuel , pressure tap if needed, and has been broken in with methanol 24% caster mix. An extra plug will be included, Not very many were made in this  "competition" style configuration . $300.00