Hey guys! My brother and I have been trying estimate how much horsepower my 89 notch 5.0 has. He is hellbent on it producing about 200 now even with all of my bolt ons. Does age really deteriorate it that bad? I can understand dropping some HP but not that much... Anyway I have a CAI, underdrive pulleys, equal length shorty headers, offroad H-pipe, and a t5. Any input would be much appreciated.