The Holley terminator x takes up a lot of real estate because of how the harness is made where it all connects at the controller. Approx. 16x16 inches for controller and coil drivers and so on. I bought the 2013 up for a 2018 5.7 swap and the knock sensor connecters are for the 2005 style sensors it also has some extra harnesses that it doesn't use Tps and Iac.If I was to do it again on a stock engine I would use the Mopar kit.