Cam up my 318, help me chose!

Rusty is right. Gears would be my first choice also.
-Camshaft selection is pretty much married to compression, and stock 318s dont have much of it. If you cam it up without a corresponding C/R change, you will trade away a bunch of bottom end torque for a very little bit of top end power. But since you have 2.76s, you barely get into the powerband at 60mph, and because of the torque loss,it takes forever to get there.
-And spinning one of two tires, however far, is hardly grounds for bragging.