I beg to differ. The \6 bars are even too small for a \6.
IMHO, what you really want for a small block v8 are the big block torsion bars, at the very least the .870 heavy duty small block bar that came in AC and 340 cars. It will prevent bottoming of the suspesnion, firm up the ride without being harsh and make a dramtic improvement in the handling.
\6 bars with a v8 are only good if the car is going to be strickly a strip car where they can help with weight transfer. This weight transfer is also a bag thing on the road as it works the other way under braking and you get excessive nose dive.