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The clutch I got my SB 1947 OFE installed the last part on November. It was nice to now have a non slipping clutch again. I am impressed with the SB. In first it engages smoothly, it is a little grabby launching in 2nd but nothing to worry about. It holds like the Hulk and I am very happy with it. i made one run of about 475 miles with the 5th wheel in tow and the comp on 2X3 and it handled it just fine. This was on a good mix of flat and hill country. No long grades to speak of but a good many short 6% or so grades. The clutch held great no matter what I threw at it. When I got home maneuvering the 5th wheel into my driveway went smooth. I was pleasantly surprised how smooth it was in 1st and reverse. It is mostly flat but a 90* turn to back it in and takes a good bit clutch work to get it in. Fuel mileage and the comp I had to move the 5th wheel a few months before the clutch install. Since I new the old clutch was almost done I made the trip in 5th gear. The trip was 440 miles of mostly interstate like described above and I ran 65 mph as much as possible. I netted 10.1 mpg on the trip.That was with the comp installed but turned off which allowed me to build over 20 psi of boost without the ECM defueling the engine. When I made the return trip after the clutch install I still ran 65 mph but used 6th gear as much as possible. I have always towed in 6th as long as it pulls good with about half throttle. I made the trip with the comp on 2X3 and netted 11.3 mpg. That is best I have ever gotten traveling at 65 mph. Driving around empty has been a lot fun to. The comp puts a lot of power to the ground and it was nice feeling like young man again. I am thoroughly impressed with it especially after driving with no chip for the past 2.5 or so years. The miss Now the rub. About 3 weeks ago I noticed i was picking up an intermittent miss under medium to heavy throttle. It is not like one cylinder cuts out it is intermittent and not constant. The truck idles fine with no miss and does not miss if I roll into the throttle and let the rpm build. it misses when I just stick my foot in it and every once in a while it does not miss at all. It also does not miss with the comp turned off no matter how hard I get on it. Not sure what to make of it, weak injector, fuel leak, weak cylinder, something with the comp maybe. The weather has been either too wet or cold to check much out. Hope this turns out to be simple.