RPS no longer sales the dual diaphragm rps 3200 lbs. pressure plate for the r-154. They just sale the single. It is rated at 600 ft lbs according to rps. I purchased mine from titan motorsports and was told that it was rated still at 730 ft lbs after talking directly to rps. According to titan it is rated at 730 ft lbs before with the dual diaphragm and the same with the single diaphragm. So if you purchase one be sure to find out if its the dual diaphragm which is rated at 670 ft lbs according to rps or the single diaphragm at 600 ft lbs.