Hey guys! Just wonder if the 5" pulley to underdrive alternator is a good or bad idea? I found one to use. My car will have 3.91s out back. Large hydraulic mopar cam (so rpm a little high). I don't have a stereo or power drawing accessories @ the moment. Alternator is a 60 amp. I saw larger pulleys on factory hemi darts but nit sure of diameter. Please give me some insight.