Used a york compressor from ebay or Amazon as there weren't any available for easy pick up from local used parts yard. . There are a couple long threads on the York/OBA that has plenty to read Not all of it is specific to the York but there is enough there to get a good idea. Wits' End York On-Board-Air Schematic and Discussion and Bringing back the York OBA bracket and pulley kit!.
The install is prettty straight forward when using the kit from WitsEnd aka @NLXTACY. Before the manifold was shipped Joey even gave me a call to ask which electical connector was on my York pump and matched the conncector on his end to make it plug and play. That is service. In brief summary of the install, the bracke just bolts in place to the engine block, bolt in the york to the bracket, replace the fan belt pully with the provided pully which allows for an extra belt, re install the fan belts and the belt to the york, add the fittings to the compressor and if you go with the suggested air source being the pre-filtered air from the air cleaner than there are some holes to drill in the air filter box. The manifold installs with 2 existing bolts on the fender. Wire up the electrical and route your air lines and you've got air . Not sure the kits are still available but maybe they are or perhaps he'll do another run when enough interest builds again.
thanks for the feedback
and more kits available starting on Wed.