I have been searching for the last 3 months with no luck trying to find AC compressor brackets for my factory compressor. I am converting a 283 w/factory air to a 409...preferrably with the same air. I have found 2 sites that sell the compressor bracket for a 348 , original or A6 compressor. Will the 348 bracket fit a 409 block....I'm guessing the lower bracket will but the upper bracket may not because of the different heads. 
Perhaps it can be modified? 
Perhaps it can be modified? 