I'm not sure if the clutch will work on the 555, I bought it for my 525, and know it's for an 18 spline. The pressure plate says it's for 2.2/2.5, but you would have to find out for sure about the disc. I paid just over $500 for the clutch kit(clutch, pressure plate, throw out bearing, install tool, and a set of Mopar Performance flywheel and clutch bolts).
This is from a TD member I want to purchase but-