port side drive out of my ameorsport 412 that was taken out of service in 2008.port motor  was overheated and I pulled trans and motor re built drive bought a set of gears from Mack boring and re kit from transtar  starboard side available as well. boat had 560 hours on it again only 50 hours on this drive shipping is approx $350.00 in Niagara Falls N.Y. more engine parts etc .