Look for a stamping of HIN numbers (Hull I.D.) molded into the outside bottom edge usually of the transom.  The letters will tell you MFG. usually

i cant make out the numbers on it...title say 1977 pyt...and the numbers on the pump are 12jc-a

Bubble deck...nice hull. Look on the back right corner right under the rubrail... first 3 are the manufacturer.

i cant make out the numbers on it...title say 1977 pyt...and the numbers on the pump are 12jc-a

Pretty Young Thing? Maybe Michael Jackson owned this boat

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the boat has been setting for 2yrs all the gauges work engine turns over but i didnt kno if i could start it out of the water? ... the engine is new and has never been in the water its a 383 with aluminum heads i have no idea about the cam...seats are in great shape and the hull is dry and solid no soft spots or broken spots...ill post more pics im away at workk now..the jetovater works well it functions and the wheel turns but i dont think i did bad for 1800..mostly needs sum serious paint work and im pre sure the pump does with the amount of silicone on it , are pumps tough to rebuild?  so wat hull do you think it is again and if i remeber right the numbers where on the left side under the rub rail not the right but i cant make anything out of it...