Im going to replace the fuel lines in my 1973 23' Newman 165hp mercruiser .This boat has 2 tanks for/aft.. The aft tank has copper going from tank to selector valve, then copper to about a foot from fuel pump then flex hose(looks about 1/2 dia copper).. All the fittings appear to be compression type.. Any guide lines on running fuel lines on an inboard and mabe a good book on these things? Thanks again
