It seems that the higher the amps, the more I might need a different pulley setup. I think the 130 amp will require a dual belt from what I've read, or it can squeal or break at high rpm. I also read where a 130 amp overcharged a battery causing trouble. I think I will find a 1G 1 wire with the extra wire for the dash warning light. Since I don't have AC a 70 amp should be enough.