This on a 1999 bowrider with a 4.3 mercruiser. Well there was a bad rod bearing in my motor and they said the motor was originally out of a vehicle. What tells it is out of a vehicle? They said the motor was pretty tired and wanted to put in new. The pistons and clinders looked good from the top side when I was in there to look with no scuffs. The cam and crank they said were shot because of the fragments. There were pieces of the bearing in oil pan and such. Should I keep my block and just put everything new in or get a reman for 1900 plus shipping and the old block. Everything else on the motor was marine so apparently just the block and internals were vehicle. A reman motor installed from them was going to be $5350. Let me know what you think.