Too many choices when it comes to buyinfg a mustang. You could go back and buy a classic. You can get a nice fox cheap and mod it. You can buy a SVT, Bullitt, Mach1 all in the 01-04 body style. Now the new retro style, GT, V6, Shelby GT500, GT350h etc... Not to mention the Saleen, Rousch versions.
I'd like to see the GT350 with the GT500 body work, lightweight aluminum block (the GT's WAP), better heads, forged internals for a potential N/A buildup. Now the question remains which 'Stang will get the Hurricane motor (aluminum please) when it comes out?* Put it in the new BOSS (a 429?)with the GT-R concept bodywork!! Then... S/C it for the Shelby GT500KR. That'll teach those Hemi-lovin' SOB's. Dreaming???...you betcha.
*Won't fit??? Cut out the strut towers and slap in the MM prototype SLA to make room.