Welcome aboard Sealiegh! You've found a relatively rare model that I personally think is the most versatile of all the 20's! The cuddy cap stiffens the hull and with a little more weight up forward, I think they're better balanced and ride better than the CC's, although most folks don't notice that riding in the back behind a console on a CC. I've taken many long and fun trips in my Seafari and the big cockpit makes for a great dive boat. Check out this link
http://www.moeslyseacraft.com/upload...oatingp1-6.jpg for more info on it. That website also has a ton of info on SeaCraft's founding and early history. If you'll PM me with an e-mail address, I can send you some Adobe files of a couple of factory brochures of the Seafari.
If you'll check out the running angle plot in the magazine article, you'll see that Gillie's right . . . although the boat will plane at 12-13 mph with a light motor and trim tabs, the running angle tends to flatten out till you get up to about 25 mph, so if you don't have tabs, it actually rides better in a chop at 25 than it does at 20 because the sharper part of the hull is hitting the waves! Those old cross-flow motors fairly light, simple and easy to work on if a bit thirsty, but if it's in decent shape, you can buy a lot of gas for the price of a new one!
Let's see some pics of that new rig! And don't be shy about asking questions - there's a wealth of knowledge on this forum! Denny