71 Duster 360 turbo build

I would like to upgrade, but I have absolutely zero space in the current configuration. I do actively switch off the intercooler water pump and trans cooler fan when at low rpms to power. My radiator fan is capable of pulling 45+amps at full power.
Damn that's a lot of amps, I have 4 7" that only pull 3 amps full power.