I have a 1986 150 hp black max serial# A993910 and a 1990 135 hp black max serial# C239584. The 135 hp blew up but the 150 runs decent. I would like to keep the newer housing and such of the 135 because it looks better has the power trim switch on motor and is in much better condition overall except for the not running part. So I am wondering if i can put the 1986 powerhead on the 1990??
