My clutch question is about which South bend clutch to buy, the Con-OFE or the Con-FE. Ive been told the FE is a bit too grabby for a daily driver but I want to be able to put down 500 hp without worrying about the clutch giving out. I was just wondering if anyone with an FE drives their truck everyday and could tell me if its too grabby and hard to drive. Now for my transmission questions, I want to change the fluid in my 5600 and was wondering if what royal purple has is what I should go with and how much does it take to fill it up so ill know how much to order? Second, a couple days ago my transmission seemed to be making a noise. I would describe it as my shifter sounding like its rattling when im driving. It doesnt do it all the time now but when it does it does it in any gear, mostly 3rd and 5th though. If I hold the shifter it doesent make the noise at all and I cant feel anything through the shifter with my hand. Any ideas or reccomendations on what it is? Maybe the fluid change will cure it because my truck has 80,000 without a fluid change(I havent had the truck long, so that one aint on me)