Joe,
SpringAir probably has a set for this plane, check with them. I'm thinking "300" series, maybe even the "100" series.
Go here:
http://www.retracts.com/
Regarding the fake air inlet/outlet: Unless you can get twice the area at the tail, don't do it this way. Your best best is to rework the scoop area to "form" into the LE of the wing with balsa, and re-cover. I know this takes away from the F-16 looks, but it would definately help it fly better.
And the Rudder? Who needs'em?
Throw some glass up front too, if yer gonna run a Jett. Actually, this is a good idea no matter what you run.
Gary