Russ,
I think you are wrong on this issue. The SRT is not comparable to a GTS or ACR with more power, because the weight it totally different, it has new tires, a redesigned suspension, etc, etc. The Gen I RT/10 dynoes the same or better than the GTS in torque, in my experience - NO WAY is there a 50lb-ft difference. Also, torque and HP are exactly the same thing - but if you make TQ higherup in the RPM band, that equals more power. You need both to give a good 1/4 time, but usually cars with lots of TQ and not enough HP are tire-smoking machines that run out of breath too early and need to be shifted more - just like the GenI RT/10.
A 460RWHP ACR is *not* going to hang with a bone stock SRT IMO - just like a 400RWHP RT/10 doesn't hang with a bone stock GTS.