So, I have searched the forum and I am overwhelmed with all the info I found. My boat is a 1974 Chris Craft 25' Tournament with Twin 3.0 140hp GM motors. I believe the transmissions are P-200 the numbers are unreadable. The serial numbers on the trans are
J1 *12560 (Starboard)
J3 *12560 (Port)
After a refurb of the boat and not being used for 6 months, the port trans won't go into reverse. I replaced the old leaking copper lines with stainless hoses I had made up. They work fine on the starboard motor ( that trans leaks at the bottom of the bell housing under power). Any help would be appreciated, I prefer to exchange for rebuilt as I have no idea of the history of either transmission & for piece of mind. The transmissions are the only thing left other than the shafts that aren't new, both motors, electrical, wiring, everything has been replaced.
Photo's of the progress: