This alternator brace Is designed for mounting High Mount AC brackets from 1995 F-800/Freghtliner onto 1994-1998 Dodge 12 valve Cummins 6BT engines.  We use this set-up in all of the 73-87 Chevy to Cummins 6bt conversions, it allows you to run a bigger Sanden AC compressor without notching the frame.  Add on our tensioner mount in the options if you don't want to modify the Cummins part. 

Here is a list of the Cummins numbers needed for a complete set up:

Water inlet connection (Compressor mount)    3930888

22 SI  Alternator Support                               3930820

Tensioner                                                      3978021

Tensioner Bracket  (this will need modified)     3930838

2" Water Inlet                                                3941929

Orings (you need 2)                                       3906697

Belt                                                     Gates K080690

The compressor, alternator would be sourced from a 1995 F800 with the 5.9.