Litchfield Type 25 (2007)
The new Type 25, like the previous Type-25, used a modifed EJ257 block but it was built by the US arm of Cosworth. They used Cosworth’s own forged pistons and conrods balanced to within 0.5 grams. A modified STI crankshaft and STI engine casing were used and the ‘short’ engine was assembled by hand. This ‘short’ engine was sent to Litchfield to be finished . Cosworth honed, big-valve, ported cylinder heads and cams were used and the engine was installed into a 2007 Japanese specification Spec C. The engine produces over 415 bhp (309 kW) and 420 lb·ft (569 N·m), for a power/weight ratio 1 hp higher than a Porsche 997 costs $10,000 more than the normal 2006 Subaru Impreza WRX STI.