Several years ago I swapped 250 merc marine motor for a pass/ truck motor in a boat. The Pass/truck block casting was slightly different on the frt. where the marine motor mount bolts in place. I had to fabricate an "ear"(1/4"plate)that bolted to the block and to the motor mount.Everything else from the marine motor bolt on with no problems.I don't if your aplication is the same but this worked for me. Also take note the the 292 motor is a little taller which might cause some clearance problems. Maybe this will help--Paul
