Thanks wilkin250r. Also, depending on the amount you increase the stroke you may actually have to get a longer rod to keep the piston from being pulled out of the sleeve at BDC. When you increase the bore only you are increasing the volume of air/fuel that can be pulled in to be burned in the combustion process; therefore it would not negatively effect the performance characteristics of the engine at the top or bottom end. If you have your heart set on a stroker try to get a cam without really long duration. You will have to get a short duration, low end cam to keep your low RPM cylinder pressures up to complement your stroker. Otherwise as wilkin250r said you will be getting the worst of both worlds.
99' EX, full TC national 440, TCS, Laeger, RPM, Baldwin.