2 barrel to 4 barrel?

You will at least want a dual exhaust if your not running one already to see much improvement. I have done this swap a couple of times and you can adapt the 2BBL linkage to work by extending the kickdown and throttle linkage. Make sure at full throttle the kickdown is also all the way back. Like Hemi said the cam will realy hold you back but with a good exhaust you should see some improvement.