I bought mine used and it has worked out great.
See the attached thread for a great FFR Cobra for sale. I saw it at the LCS and like others said, it is a great build. Not sure if you are set on a SFP or using your engine, but I suggest you consider this one. It is in the St Louis area.
http://www.ffcobra.com/forums/showthread.php?t=195118
Also, see the thread about the WCCC going to Byron Oct 18 for some fun drag racing. You could see some of the different builds and meet some of the WCCC members, if you have not met many before. I assume you are in the Chicago area. If the weather is good I might be there too, but not to race.
Good luck, it is a great year to buy a Cobra (soft market), sorry to you sellers.
Lee