What do you mean the neck is warped? If the neck just needs adjusted on the tele, I'd get that if I were you, simply for variety.
Can I ask you how you have your Mustang modded? I have/love the same model (one of the most recent pics in the pics thread). I really dig the stock pups but I've thought about putting a more versatile pup in the bridge. But I don't wanna screw with the Mustang mojo.