Thanks it rides like a cadillac and should have plenty of power. Oh crap From what I found out after installation your right about the pulleys the larger pulley on mine will cause it to run too slow if its a 450, they also said the smaller pulley on yours will cause the 451 to spin to fast and cause premature wear and tear? I'm now thinking I might put the 450 on the 1872? I will have to take off the f.e.l. which I would put it on the 2284. decisions, decision?
update I found some write ups on the differences between the 450 and the 451, the only thing that is different is the ratio, I checked mine and it turned out to be the 451 so I'm good to go.