Performance wise, most people already have a saleen or roush, and some look it too. IMO SVT all the way. DOHC is kick ass, the heads flow ALOT better = more power, and I like the idea of an IRS. I know the solid rear is good for drag racing, but I want a better ride on the street. I hate feeling the rear shift around over bumps.
I would love to have a 00 Cobra R myself. Looks awesome, and a 5.4 DOHC with the best flowing modular heads sounds damn good to me. Wouldnt mind owning a terminator cobra though...very sweet.