First post on this site---be gentle please

Recently a distant cousin sold me a '78, '20 MasterAngler that looks a little scruffy(well used)but seems to be very sound. It's on a cruddy but useable trailer and has some equipment and electronics. Power is an '85 140 Evinrude which he described as "wore out". I'm going to see if I can maybe revive it. It was running and shifting in summer '02. My neighbor has a 1989 225 Evinrude '20shaft off a bassboat. Looks real clean, faded paint but no corrosion. It's on a stand in his garage and he wants $1500 for it. Anything awful I should know about that era 225Ev? Are the mounting holes for the transom bracket maybe the same as the 140? If this works out I could be SeaCraftin' pretty cheap. I've wanted a SeaCraft for 'bout 30yrs. and finally bungled into a deal on one.
Thanks, Howard
I found this site this morning and have pissed away about 2.5hrs already!