I currently have a Code-3 Supercharger pulley and it was so easy to install unlike any of the crank pulleys. The Code-3 is comparable to the 178 as far as not really having to have a tune and so on. Of course the price of the Code-3 can't be beat which helped with my decision. And also the Code-3 looks basically stock for when you bring your car into the dealer for warranty work, if you still have a warranty.