i have a lower gearcase (uint) that is complete. it was in a box beside a 1976 johnson 25 hp outboard i bought. the owner could not remeber what he bought it for. i have looked on several sites trying to match the casting numbers with no luck. if anybody out there is parts guru i could sure use your help. upper housing stamped D1 0383850 ,lower skeg housing D2 0302500. thanks