You can't use stock a body axles redrilled to 5 x4.5 with the B body brake set up. A axles need A body drums and plates. The standoff distance for the A axles is shorter than the B body stuff.
If you have a set of B body drums/plates get the aftermarket axles set up for those. I got this from Brewers site, you need the moser number MOASBB, not the MOASAB. Did you get that from the listing above from the Brewers site?
