needed high amp alternator

have a 73 swinger small block with a/c and p/s, p/b....
my power master 90 amp will not cut it anymore, since car redo... have added dual electric fans, trunk mounted battery, nitrous, h4 head lamps, and msd, as welll as fog/driving lamps and a stereo... currently still running the dual belt design and factory alternator mounting with factory a/c brackets... what have any of you guys used from power masters rating chart if everything on, would need to have at least 150-200 amp alternator to be safe, all ready upgraded all the wiring to handle it, ,,, anyone have any ideas on application to look from? that doesn't break the bank.... one wire set up ok...