You should think about getting ahold of a Buick grand national, They are quicker than the above, more economical, and downright cool. I have seen some clean examples for sale in WI where I am for an average of 10k-18k.
Did I mention that they are very cool????
Depends.. if you want to restore or buy one.
Building your own you can get a project outta the junk yard and fix it up or you can buy one.. either way you will spend some cash