I've got a '71 65 hp Mercury 4 cylinder that I'm looking to add tilt and trim to. The new aftermarket units are too pricey for me. Busboy was kind enough to tell me that the 4 cylinder ('71 and older) 65 hp motors use a 2 ram t&t, with a single solenoid for the hydraulic pump mounted externally. Apparently, sometime later Merc went to a 3 ram system with 2 solenoids mounted under the engine cowl. Anybody know the specifics on which t&t (motor year and hp/cylinders)are compatible with my motor?<br /><br />Many thanks.