In my never ending quest to find an elusive vibration in my 904 340 72 Cuda, I asked a question a while back about what I should do. Someone recommended I change the driveshaft input spline and bushing in the tailshaft. So I went to Carquest and ordered a kit. Yesterday I went to check it out and I find the kit I have is for a 727, which is way too large. I returned it to CQ with no problem except they don't list a kit for the 904 just the rear seal with no bushing. Can anyone point me in the right direction with CQ or NAPA numbers?