Remove both upper plugs.----Fill with oil from the bottom.----When oil reaches middle plug , intall it.----Then continue to fill until oil comes out the top , if indeed it does.----Perhap a plug for flushing ?
Yes----There are brackets to mount the motor.----From the mid 1960's to 1972 will fit.-----Your location ?-----Brackets have multiple holes to adjust height.----Install a new impeller before launching the boat.
Spare parts business for the car companies is very expensive.--Packaging , warehousing, retrieval and shipping of 1 part all costs money --They are more interested in assembling new stuff from bins with a 1000 parts each.
