Brake booster push rod

[rechinca]

I am getting ready to media blast the correct original brackets and braces and install. The previous owner converted it to power brakes by adding a booster and cobbling together a pushrod for it and threading it into the end on the brake pedal. It is one booger welded piece of crap. I have not taken it apart yet, but can that pushrod just be replaced with the proper one or is it wise to get a new booster? The brakes worked great so I’d rather just find the correct pushrod, but the local parts store folks look at me just cluelessly.