Normally,there aren't any clearance issues with mounting the dual conversion bracket and a non-power booster on the AD chassis. However, it isn't just a simple bolt-on application. The single feed stock system has to be split into front and rear and plumbed into the master.
I initially did this upgrade on my 54 with standard transmission. However, with the entire system upgraded, dual M/C, wheel cylinders, shoes, and all lines, I found that the brakes were not up to par with the modern vehicles in traffic. I had to exercise extreme caution when
navigating in traffic....I just didn't have the stopping power for today's flow. I added a front discs, mid 70's Corvette manual disc/drum master (AutoZone) and the required proportioning valve and residual valves from Summit Racing. There is a world of difference.
You didn't ask, but I feel obligated to encourage you to upgrade to front discs. The conversion is not cheap or for that matter easy, but neither is rear-ending some car that ducks in front of you and then does a panic stop or turn.
I've added a couple sites that have a wealth of INFORMATION about brake upgrades:
www.ecihotrodbrakes.com www.mpbrakes.com Check them out. There is lot of info on conversions in the search feature on this site and the call will ultimately rest on your shoulders. I hope this helps.
