I picked up a 21 foot regal br 1989 with the 454 mag in it. The outdrive is a alpha one. I looked at my book and it said that year with that engine had 1.32 gears in the outdrive. The outdrive is blown in the lower unit, not sure if there is damage in the upper. My question is would it be ok to put a alpha drive with a 1.50 ratio on it for now till I save up for a bravo conversion. I have a older Mr ready to instal... thanks in advance...