The fixing of the front clam was another part of the build that I wasn't entirely looking forward to. The first step is to get the clam in position then mark out and install two fiberglass panels into the front to a), stiffen up the clam and b): to give a fixing point for the brackets.
I decided to tackle this by hanging the clam first on some fixing points that I attached to the main tub, these points will act as a lip and support and help spread the load. With the panels marked I fiberglassed in the supports.
NOTE AND UPDATE: Having now completed the front body work alignment, there appears to be plenty of room for integral master cylinders with out having to angle them......I'm not sure why other can't fit them. but I don't see an issue using this set up.
You have to admit, it really does look good though!..