Well, I'm a newbie and realized that I should've read basic instructions regarding how this site works. (it's a man thing) I have a 1986 Chris Craft Scorpion 196 LTD. Mercruiser 350 Alpha one Gen 1 outdrive. I cracked the lower unit, lost oil and subsequently locked it up. I've removed the lower portion. I purchased a used outdrive ($60 upper and lower) that was broke. The drive shaft was stripped. Figured I'm not out too much $ if it doesn't help me. I thought I'd either replace the drive shaft from mine or just use the housing. The housing itself is a few hundred $$. When I was younger I would've utilized my Clymer manual and dove head first learning as I go. Now just don't have the same kind of energy I guess. Long story short..How many hours should it take to rebuild my lower unit from a certified professional? Trying to decide which way to go, buy used now or have fixed? Thanks KShort - Hamilton Ohio.