Spares right, have her checked out good and if all is well go for it! If ya need any info we'll be here to help you. I'm putting a rebuilt motor (170) in my buddys boat when I get off work in the morning. It was 22 years old and still running but had started blowing a little oil so we pulled it and had it bored .030 over and refitted with new pistons and rings. He had already replaced the head earlier this year. It should be go ta go now!!