I have a 1980 with factory fiberglass side console and bow rail. Seats, bow locker and side trim are refinished. Looks just about as good as yours. It has a 2006 Yamaha 60 four stroke on it.
I have a 1981 Sport 15' with a 1979 Johnson 70hp 2 cyl. The motor is in practically mint condition. Mine has the sport rails that wrap around the seat up to the end of the console. They are a bit shorter in height than yours. The old whalers are actually much lighter and sportier than the brand new Sport and Super Sport 15's.