i'm not a guy that tows, so HP is very important in a muscle car for me. Fords VCT+3valves/cyl allows for a plenty wide power band. IMO ford is sandbagging. The primary reason for OHC is more rpm. BOSS MACH1 & Cobra will show more of what it can do.
C&D magazine shows both the power peak and redline @6000.
The redline is normally 250-500 rpm past the peak(in other cars)
Is it possible power is still climbing at 6k?
Either way, a higher redline should give a quicker ET.