I've yet to drive my car but I have re-drilled axles on my 408 powered Dart. I used B body drum brakes which required this adapter that I made. I'll find out soon if it's strong enough.
Now that's an interesting approach. Looks like you made the adapter thick enough to space the drum out to where it would be if you had B/E-body axles and it's larger diameter gives the studs more support. Plus it adapts the register to the large one for B/E-body drums. As long as it's good material I don't see why it won't work. If it does you might want to market it as an alternative to replacing your a-body axles when upgrading to large brakes. Looks easy enough to produce so you could potentially make some decent smack while helping A-body owners that don't need race axles.
