Witch car should I fix up?

[Brad]

Ok im really having a hard time decideding on this..next april I will start work on my project car for a local club. The work is going to include a new paint job, a new stereo that will most likely include at least a 1,600 watt amp and four 12 inch sub-woofer's, also adding rim's.

Anyway the two cars I have are a 86 mustang 5.0 Gt, and a 72 cadi deville.

The mustang is pre-owned, the cadi is to but it is still more or less the way it was when It came out of the factory.

So, the mustang or the cadi?