74 Duster, resto mod 6.4 front end rebuild questions

Dr diff makes a B body wedge brake booster bracket for the A body so the booster clears the valve cover. However hasnt had any in stock for ages and doesnt know when he will have instock.
Any other options/brands who make a brakcet for the modern hemi to hel clear the booster.
I want to try and keep the booster