[jason555]

I repowered my 23 Center Console with a DF 300 Suzuki, 30 inch shaft with fly by wire technology. Initially 4 years ago I purchased a leftover model and enjoyed the performance and economy as well. It replaced a pair of 225 Johnsons that were put on the boat when new in 1986. The motor is quiet and weighs in at 600 pounds. The boat has no rear squat now and it is a pleasure to drive, the peace and quiet compared to the ole Johnsons is unbelievable. It will run in the low 50's but have a great 3 mpg cruise at 30 mph.
Regarding keeping a good running motor my only opinion is that if it is a low hour motor you can probably sell it and get a good dollar for it now. In a few years there will be repair bills and have a much less depreciated value. My Johnsons were low hour motors and sold literally in one week. If you can sell now and take that money and put it into a new motor, (mine came with a 6 year warranty) you will definitely enjoy the new experience. Sell the old motor on the boat as it is easier to demo and let the buyer pay to derig.
Just another opinion