Jumpin.....The boat (when i purchased it) had a 1994 Johnson 150HP 2-stroke.  I had numerous problems this past summer, so I decided to upgrade.  I decided to stay with the 2-stroke because of weight.  I've always owned 2-strokes, so I'm not sure of all the advantages of a 4-stroke.  I do know the same HP motor (4-stroke...Honda, Yamaha, Mercury) weighed as much as 100lbs more.  My old Johnson was 385lbs, this motor is 410lbs.  Also I bought the motor this past fall, new old stock (2007), and got an excellent deal, based on new (2009)prices.  The motor is quiet, doesn't burn a lot of oil (after the break-in period - 10 hours), and its fast!  
I've also seen a few threads concerning scupper location....that was one of the reasons I went with the lightest (new) motor I could purchase.  My scuppers are just above the water line....the only thing I don't like about the boat.   As for classic....this is my dream boat, and perfect for tooling around in the back bays near/around Ocean City, MD.