Hi Folks, Former unlimited hydro driver Scotty Pierce here. I just bought a 1989 Marlin 21' kinda go fast boat. I believe the boat was built in Seattle, although it looks a lot like the boats from my youth on the Colorado river. The boat is powered with a Mercruiser 888 with a Alpha drive from the 80's. The engine is a 350 Chevy. The owner tells me the boat goes real bow high going on plane. He installed a Sting Ray on the drive, and said it helped. I hate Sting Ray's, it seems to be crutch for a problem elsewhere, mostly under powered boats. This boat is not under powered. While I haven't measured the bottom angle yet, it looks to my naked eye to be around 15 degrees. I believe this stock drive has the propeller to far below the bottom, and I am thinking a Speedmaster lower unit might improve the performance. So my question is, am I on the bus, or not? If I am where can I find a lower unit? Thanks, Scotty Pierce 206 949-1695