I have a Cadillac 14' open deep V with a 60" transom. The pictures you show have many similarities to mine. The transom looks identical, down to the reinforcements, the drain plug and the corner plates. Looks like you have a Cadillac, model unknown, like mine.
Mine has 4 seats across, the front bow seat is small. Mine was bought new by my father, late 50's, I have the original manual, but it is a generic and the model number is not known. I repainted it in 1969? (the original paint faded quickly and started flaking early in the boat's life, poor factory paint)....and I removed the ID Plate, (little did I know as a teenager) gave it to my Dad, since lost....I am currently replacing the transom wood inside and out. It was all rotted as it has been stored upside down for the last 30 years by my brother....who recently gave me the boat, he never used it after the 40hp Evinrude driveshaft broke and it damaged the end of the crankshaft (he was going to send the motor to the junkyard, and I convinced him to give it to me). No aluminum corrosion though.
Mine was fitted with a side steering wheel , by the dealer, Watsons in Curtis Michigan, between the second and 3rd seats. Powered by a 40hp Evinrude Twin Lark, manual pull start. We spent many hours pulling water skiers until 1975 when all the kids in our family left home, including me. The original motor's lower unit went out and Dad bought a new motor instead of fixing it....another manual start 40hp Evinrude, which I have since rebuilt with a new crank and driveshaft. I hope to mate the two next summer and go boating.
I would really like to know the model of tmy boat, if anyone out there has a clue?
I note you last entered here a few years ago.....hope this reaches you and helps in any way.