I am surprised! Since my Banks died I missed the extra power so I cranked up the Smarty to SW7 and let her eat..... it didn't slip the clutch at all WTF?! I thought it was goin to eat it alive since guys can't run past 3 without slipping! Cool But I do miss the pressure added to the rail from the Banks and it seemed stronger up top with the Banks stack as well. The pressure from SW3 and Banks on 3 was max of 22500 to only 15K on SW3. Pressure on SW7 = 21k... . So since I have the harness and everything else I'm gonna be looking for a used Banks and plug it in I guess... . Oh yea and it defiantly rolls a lot more coal on SW7! I sure could use an aftermarket fuel pump now! Oo.