I have a 72 18 horse completly rebuilt.New mag points etc.The lower end was gone through with new berrings and seals.Been in the garage since.It only cost me I believe 275 for the lower work.I got a deal but you might want to look into having it rebuilt.[Bleeeeep!] I might even sell for a price.Havent put the boat in the water as my buddy got a lund with a four stroke that works better for chasing cuttys and he goes several times a week.send me a personal message if you want to talk.