Okie, I am not quite sure if Merc even offered the HP500 back in 1992. I would be interested to know. I do know that these motors did not come in the boat but I am not sure what was in there before. Could have been another set of HP500's for all I know.
My thunder is a 94 that came with HP500's. They do not show this option in their sales brochure that year. I have the invoice from wellcraft to the dealership that shows the HP500's as the engine option. The splash graphics on my 31 were actually the graphics shown on the 38 in the 94 sales brochure.