why, why??? Already went though this on CCfan haha. GM LS motors are unbelievably common. Cheap, many aftermarket parts. Much more proven than any of fords late motors. The Modular motors have so many problems... Their new motors have a lot to make up for, and no one has seen what problems they have yet. Someone on CCFan suggested using the eco boos motor. NO!!! The eco boost motor, on a stress test for normal towing conditions, is worn out at 80K miles!!! NOT COOL! Also, the 5L cyote motor. haha, doesn't make that 420hp up until 7,000 RPM!! The Chevy 480HP LS3 makes its HP at 5,500 RPM! Great for a boat! What Indmar, PCM and all of them SHOULD have done is, get the new 6.4L Dodge Hemi which makes a whopping 525HP, I bet you could easily get more with no emissions