[spareparts]

the 250 is the 165 hp engine, mercruiser used the 292 in front of the tr outdrive(rated at 200 hp) and transmission for use in comercial applications, I've seen several change overs from the 250 to the 292 in front of later style Alpha drives with no probelm from the increased torque. It will require modifiing the exhaust hose from the riser to the pipe, and may require modifying the engine box as teh 292 is taller. Most people go ahead and swap out the carb to a four barrel( most intakes are allready made for this). Replacement manifolds are availble from Barr, Osco, GLM, and a couple others. Yes they are expensive, but with the inline, you only have to buy one, with a V engine, you have to buy two.