I have a 1974 Mercury 500 and was wondering if i was looking for another lower unit what years/models will be a direct bolt up? <br /><br />thanks. -Neil
Big selection! 500's, Classic 50's, 40 4-cylinders, 350's, 400's, and 402's. Pretty much any year. The 3-cylinder 650's and 70's look the same, but they aren't.