1972 pwr strg column/pwr brake booster assembly

gregpurcell said

I have all the brackets and the swivels. The booster canister is available from auto parts stores and the core charge is less than the extra shipping.

http://www.ebay.com/itm/331462114289?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649

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Unfortunately most of the local parts stores we all know still show them on their websites and yes they show the dual diaphragm unit I'm looking for but when you "checkout", it tells you they out of stock or unavailable.