You would need a N2O bottle the size of the shuttles main tank. Super chevy magazine just did a test to see how much juice a built small block could handle. They blew the motor on a 750 horse pull!!! Using a 250 horse kit. WOW. A very high quality jet boat capable of 100mph could easily be built for under 25K, you just have to be a savy shopper. I would bet that I could do it on pump gas with a single carb, no I guarantee I could. I am going to build one some day that with a single carb will smoke anyting short of a full on race boat. No sweat. 540 merlin block, Big Chief heads, Dart or sheetmetal intake w/ fogger, 1300 cfm BG, etc etc....... all in a CP hull.