I have two Imco 1:36 Lower drives. They are nice and have less than 200 hours. Never been hurt. They have only had Amsoil Marine lube. Changed every 20 to 25 hours. Never had over 525 hp put to them. They are standard length. I a looking to trade for an equal set that are 2" short. I could use 1:50 or 1;36 Located in Paducah, Ky 42003. 270-331-0695