These boosters don't last forever, and when it's time for a rebuild you're left wondering who'll do the job? Such was the case on my '84. Even in Phoenix there was only one outfit who said they might be able to do it...provided I pull the booster and take it to their counter (wouldn't look at photos). So it was time for Plan B.
Try Power Brake Exchange in Carson City NV if you're looking for a booster rebuild at a fair price that doesn't take weeks! They turn 'em in one business day, a little longer if you want powder coating. Excellent customer service and support. They even adjusted the push rod to the correct length to work with my master cylinder. 775-297-4795.
As Willie would say...."On the road again", and with brakes that stop the way Mr Blake built the car!