70 AMP Is std with no A/C, this bracket has no serpentine tensioner ( two bolts to secure)
Bosch model 028-903-025 G
90 amp is a option with the no A/C, same bracket Non tensioner type bracket ( Two bolts to secure to bracket ) Bosch 028-903-025 P
This type is adjusted by loosing one bolt, these alternators have a spring on the bottom of the alternator to keep the tension on the belt
The below are the A/C type that use a different bracket with a Tensioner.
90 AMP Bosch 028-903-025 Q
If you have questions let me know?
120 amp Bosch 028-903-025 S
I have the bracket that attaches to the larger bracket that secures the A/C Compressor.