Just a little bit of info. I have an Iraqi alt in my 1991 Corrado, I believe the 220A IIRC. It has helpedge not chew throw a main battery as quickly. Ate a megatron in 3 years and a red top in 5 years with the stock bosch 90a.
Threw in a yellow top, till the bosch 90a spun the pully. 2 years...