Hi, I needed new thermostats for my yamaha outboard and when i took the engine number in they said my outboard isa 130hp but the outboard says its a 200hp.. I have read that the yamaha outboard 130hp is a 4 cylinder, is this right? My outbaord has 6 cylinders says its a 200hp 2.6L on the engine casing but according to the yamaha dealer it's a 130.. Outboard is a 1990. Any help please? Thanks!