Something tells me you were joking.... but just in case you were not there are a number of reason why that would never be the case!
1) No human system...modiefied or not....can positive G forces of 30+. Actually few aircraft can tolerate G forces above 9, not because we cannot make airframes able to sustain 9+ Gs but because no pilot would be able to take turns much higer than that without redding or blacking out! At 30+Gs i think crazy stuff like Nitrogen bubbling in the blood, centrifugal separation of blood plasma, and severe shock to body organs would occur.....and the pilot would also be mashed against the aircraft at a pressure 30 times his body weight (eg a pilot weighing 200 pounds would suddenly find that his weight has been magnified to around 6000 pounds during a 30G turn...and i am sure that would crush any being short of Superman or the hulk).
2) Even if it were possible to bio-engineer such uberMensch able to withstand such pressures (and it is not) it would still not happen due to fears of cloning and stuff. for example if doing things like Stem Cell cloning elicits such controversy, what do you think the fallout from cloning super-soldiers able to take 30+Gs would be? There would be a great cry!
3) It would be cheaper and more cost-effective to do R&D on Unmanned Combat Vehicles. They are not manned, meaning that G forces are less of a hindrance.
Anyway that is why that would not be possible.