I have a 70 glastron bowrider. my 94 Yamaha 75hp 2 stroke needs a rebuild at an estimate of 1600-1700.00. They are offering me an 88 merc 80hp oil injected for 1500.00 installed.this is at a Yamaha dealer/marina.Any suggestions?I would also be having part of the floor repaired for 6-700.00.I'm not sure about trying to find an other 2000.00 boat and inherite other problems.any thoughts would be appreciated! Thanks,Dan