I've also thought about the srt-4 swap. I had one as my last car and loved that little motor. Perhaps one day one might find its' way into the srt-6, but not anytime soon. To indulge my speed craving I'm starting a build up of an all-tube chassis, srt-4 motor'd street/strip/track beast. I'm trying to stay at around 1,500 # and will tweak that little four banger to the tune of 400-450 rwhp. Now that will be an interesting ride. Stay tuned, I'll post pics of the progress.