Answers to your questions Deeb:
a) Are you selling the Cobra or planning to keep both?
-> I had to sell my Cobra when moving from UK to the US. That car funded getting here and getting settled.
b) Is the red GT5 you're looking at really $60k+?
-> This is the car
http://www.qv500.com/detomasoregistrypangt59340.php it would be interesting to hear what you and others think it is worth. It has a lot of service history with Pantera Performance (I spoke with Dennis there about the upgrade and service history). Current owner/seller claims it has 16,000 miles on the clock but I am not sure if that is true or "adjusted-from-last-engine-job" miles......
c) How did your investment with the Cobra turn out so far?
Well let's see ..... negative return on "investment"
After I got the Cobra (replica) I upgraded it with ss side pipes, rewired/painted the engine bay, added blue silicon hoses and more shiny works on the V8.
The cobra came with an auto gearbox with quick shifter that died on me so I ripped it out and replaced with a 6 speed Dodge Viper/Camaro gearbox and performance clutch asetup (don't ever want to do that again as it is a money pit).
I would say I got about 75% of the parts and labor upgrade costs back again, which I was happy about at the time.