I had the pleasure of doing this in the past month... I used the Ram Hdx Clutch Master Replacement Kit from Latemodelrestoration.com. It was $339.99 and comes with a lot of new parts like clutch kit, new flywheel, rear main seal, pilot and throwout bearings... It all went on fairly well (after we were able to get the original rear main seal out - that took some time as it did not want to budge).
Link:
http://www.latemodelrestoration.com/...50L-Clutch-Kit
Good luck.