comp 268 cam too small.

You really need to think a bit more about what your goal/needs are from this engine.
Theeeeeeeeen choose the cam......
Idle quality important?
Max rpm with current engine parts?
Is mileage important?
Spend money on a high-er stall c'ter?
3.23 axle & stock c'ter are limiting factors & choosing a 'big' cam could easily turn the car into a dog....