I have a 140 amp alternator and a CVF pulley system. Made in US, great quality, great price. It is installed on my Windsor Based 393 Stroker.
More details on my 1970 Convertible Restoration thread...lots of electrical stuff in my car, trunk mounted battery, etc....
I this pic, I have the power steering pump bypassed so I could run it on the engine test stand.
https://www.cvfracing.com/black-ford-5-0l-5-8l-serpentine-conversion-kit-ac-alternator-power-steering/