As a suggestion to Morgan: why not consider the The Duratec 2.5 L I-4 that is identical to the Mazda MZR 2.5L engine. Power has been increased to 175 hp@6000 rpm and 172 lb-ft@4500 rpm torque. It is the smoothest and quietest Duratec 4-cylinder. (source Wikipedia)
On second thoughts I have decided to move this to a new thread.
