hey everyone. i have a 91 glastron g1700 with a 140 mercruiser 3 liter. 1.98 r. the upper unit took a dump and i am not quite sure on the lower. i would simply like to find another unit that has been rebuilt already upper and lower and just swap...i found one has 3 hours on it rebuilt from local marina. but its a 1.84r gen 2 i also have a gen 2 by the way. will this work? i have lots of props to choose from, if i need a different one. it doesn't seem like a big change, but maybe it is. i read people going from 1.94 to 1.47, and loosing all power. thats bad, but i dont' know! please help! this 1.84 is from a 4.3ltr. all we do is puts around, occasionally do we open it up.