Race Prepped Version:
http://www.amainhobbies.com/product_...ducts_id/25377
Stock Unprepped version:
http://www.amainhobbies.com/product_...ducts_id/25459
The race prepped version is definitely worth the extra cash, as these engines are VERY tight when they come from the factory. Ed disassembles and inspects the whole engine for any defects, then breaks in the engine using Trinity's special break in fuel, then dyno tunes the engine.
