i have a 92 honda civic hatch and was wanting to do a full complete k20a2 swap. people tell me not to do it because of space deprevation and that it will be almost impossible to do any upgrade to the engine. now, my boy is telling me to get the k20a3 because i can do more with the engine. please someone help me make a decision on the right kind of swap for the best preformance and more horsepower????????????