save for a Cobra guys have bought cobras here for as cheap as 11-13k, some even cheaper, you will still spend a decent amount buying body parts even it you find good deals, front and rear bumpers often sell for 500,rear wing deck lid sells for close to 500 and hood sells for 4-500, thats close to 2g's just for the basic parts, not to include all the small stuff, plus like they said you will need to paint the entire car if you want it to look half way decent, then add in rims and now you just have a gt that people get excitied when they see it just to realize that its a gt. there is a nice clone in kansas city mo for like 6k though, may be cheaper to just buy one done.
^ this right here is a key point! Say you do proceed with this, and dump 6-7k into all of the parts, paint, etc. to complete your clone... when it's all said and done, you will never get back your investment, because you will be lucky to get the money back for the clone stuff, and be giving the rest of the car away for free, as in the example above. Keep what you have and enjoy it, then when the right deal comes along for a real Cobra, then move on it, if you are able. If you can afford to make a clone, then you can afford to use that same money toward the real deal, add whatever you can sell your GT for, and you are likely not far off from the real thing anyway.;-)