Sinister Diesel Blue Spring Kit with Billet Spring Housing (Blue) 03-07 6.0L Ford Powerstroke RCT-RC60B641402 When you're pushing your 6

When you're pushing your 6

This helps lower the center of gravity and can also help aerodynamics

and some would say that it even rivals the Allison 1000's and Ford's newer transmissions

Error-free gasketing

Sinister Diesel Blue Spring Kit with Billet Spring Housing (Blue) 03-07 6.0L Ford Powerstroke RCT-RC60B641402 When you're pushing your 6The easy 30 minute install of the new updated will increase your fuel pressure back up to where it should be from the factory. Most 6. 0's see an increase of 10 psi of fuel pressure. The added fuel pressure will help keep the injectors from out flowing the stock fuel pump, meaning no air in the injectors, and an injector that will live much longer. Most trucks will actually quite down a little at idle, rev up a lot quicker and with the added fuel