hey can anyone recommend me a prop, iv now got the 140hp motor using the 85hp one piece leg/gearbox, motor is revving out to 7000rpm on a 15" standard alloy prop, changed to 21" stainless steel race prop what i used to use on my 85hp, still pulling 6800rpm, i know it shouldn't be revving that hard, but some how it dose, someone told me the mercury props fit on the chrysler spline, if need be ill change the spline, just want to drop the revs to around 4500-5000rpm so i don't burn my freshly rebuilt motor into the ground. any help would be lovely. also im chasing stacks(exhaust) for my 140hp would you know any1 that might have any, or would you know where i could get some. their so rear to get in Australia its stupid. cheers regards Shaun.