Thanks, sounds like a dumb question when asking it. I have been trying to figure out crank specs 69, 74, 78, 82 ect. I had done some reading and think I got an overview of it. I have read in the vw magasines that the 1915 is an awesome motor. Probably sounds like a great way to go some time in the future. I have a dp with a power pulley, dual carbs on it with a port and polish. I moves compared to my 1500 sp. A good step up. One day I will move the next step up. Thanks for the help.