Air Intake Bore out question

[Black Jaguar]

Hey guys, I have a 75 280z EFI fuel injected. I bought a 60mm Throttle body a while back and had some trouble fitting it to the stock linkage and being able to adjust it and all but, my question is if anyone knows how you could bore out the intake so the larger intake can be more useful. Instead of forcing more air from a larger opening into a smaller hole, have the smaller opening be bored out to meet the larger opening as well. Does anyone know how to do this by your self or is it reasonable to take it somewhere to get it done, or is it even possable? Thanks for your input guys! Dean

[sblake01]

I'm sure a machine shop could do that. They would taper the opening on the manifold to the size of the throttle body that is if there is enough material there to do that.