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Hey,i am looking at getting a 62mm throttlebody for my 98' Grand Am with the 3100.So far i have custom exhaust,cai,and filled motor mounts.I will soon have a udp also.If i were to get a 62mm throttle body and just port the upper intake manifold opening to match the throttlebody,will i see much of a gain in hp? Also will i have any tuning problems? Trav