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Message: [QUOTE="lubeowner, post: 242792, member: 526"] Not trying to say it isn't cheaper but I have a pretty good idea what it cost to make a twin fuel setup. I also know that everything you make will not fit has you hoped the first time, so there is a remaking process. Look at either belt driving the second pump, whether it be a siemens pump or a cp3. If trying to mount them in the second alternator position they hit the head and can't sit back far enough to run on the factory belt. Seimens pump will not fit in the main alternator spot. So you have to mount it in the second alternator position. This causes you to not only have to get a pulley to fit on the pump but get a pulley to fit on the crank. No one makes this stuff so you will have to have it made yourself. If you can't then you have to find someone who can and custom one off parts are not cheap. Then as listed in earlier posts you have the get the idler pulleys plus tensioner, not mention the brackets. The second alternator postion was designed for a small pulley on an alternator and the pump will require a huge pulley. There becomes space issues with the cac tube. I would bet you will be well over a grand just getting the pump mounted and the belt to work. Now you still have to buy the pump, have the pump mounted to reverse spin. Then you have to deal with getting the lines. If you mount the pump on the front of the crank, which I think would be the simplest mounting, you have to get rid of the factory fan. How much are you going to spend putting electric fans on the truck? I think the 7.3 flex-a-lite fans are like $600 to $700 alone. That right there drives the price way up. I just wanted to ask, what you really think this would cost in the end once you put realistic numbers to it? [/QUOTE]