Early A wit late "A" stuff!!!...Need sum help...

I put a 71 P/B system on my ole 66 wagon...OK, Got tha car runn'in, and move'in, but barely stopp'in!!...My Booster is bad...It is the small booster which is used with the offset bracket for the V-8 dart...The booster haz a clamp hold'in it together...Would any ov U boyz happen to know wher I could git a booster, or if it can be rebuilt??...I have went over my designated limit on this lil project, so them High dollar ones would be a last resort, if ya know what I meen!!!....

I ain't gitt'in much help on gen descussionz, so maybe tha people in tha know dun shifted over here...Everbody wants to repair my booster, but I would like to buy anuther(then have mine repaired!!)...REX