You asked for pros/cons.

Pros:
Frees up cash
Frees up space (everybody can use more space)
Frees up time to devote to your racer
More driving time in the GT
No more "Is that a real Cobra"
Not worrying about any future gremlins

Cons:
You may regret selling it after all your effort
I won't see it in person again
Your kids looking forward to inheritance...forget that
Missing people giving you the "thumbs up" as you drive by
One less Cobra owner for me to cruise with
To ride in a replica, you ride shotgun in your wife's camaro. Probably not so bad.

That's all for now.

Jay