68Dart500 I think the Ram Powergrip hd is one of the best performance clutches out there. I had to piece my together to, they only showed a part number for an 11 inch clutch in the 1 3/16 18 spline input that my Jerico has. but they listed a 900 series 10.5 disc separately and I had the flywheel and diaphragm pressure plate in my spare parts bin. If it was up to my son it would not come out. It took me awhile to figure out the soft-loc but once I did it's been very hard to go to another clutch in this car, I understand it, and works perfect with the Jerico DR-4 trans. I don't mind driving it on the street and it saves me and my son from tickets.