Evolution Performance, Inc. 2011 Mustang GT 5.0L 4V (5.0 Mustang and Super Fords Magazine Project Car) made 405 RWHP and 375 RWTQ with the addition of an Off-Road X-Pipe, Catback Exhaust System, K&N Drop In Filter, and a Custom Tune.
...that's a sweet motor,lots of untapped power and built with direct injection and boost (power adders) at the ready when they're needed.
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'67 Buick Skylark GS400 Funny Car "Ingenue"...World's only Buick-powered Buick Funny Car/Aug '10 Hot Rod featured car World's only Buick-powered Buick Funny Car!