I am new to the forum and boating. I bought this as a 1974 and know that is wrong the HIN is only 6 digits. Came with a bunch of stuff. I got the oversized motor running and replaced the impeller and lower-unit fluid. Should I be concerned that the hull rating says 100hp when a 120 is on it ? The motor was bought new in 94 and installed by a marina on the coast.