I am sooo tempted to keep it in the car, I have been all over the idea of putting a 408 stroker in it, I actually bought a 408 from @Johnny Mac and have collecting the neded parts to in stall. BUT the 318 runs so good I might keep it and sell the 408!!!
I like the way uncle Tony put it,..... you really have to define a purpose for the car to determine what is the right amount of power you should be getting out of it.
Only you can answer what you want the car to do for you, and the teen might be the answer.