I've done some dyno tuning at Swanson's a couple of times (not with the R), personally I didn't like his service (nor his tuning very much for that matter).
That isn't the same Bassani exhaust that is now being sold to the public is it? I met the guy who has the prototype of what I think Brian just installed. I thought it was 2.5" with 2 mufflers?
Back to the chip - I would rather go to more experienced fellas like Powertrain Dynamics in Huntington Beach, CA. They've worked with a few Cobra R's already.