There was a post some time ago of a number of the major manufacturers cars profiles. There is a difference.
Are you parting out your '91 to build the Cobra? Is that one of the reasons you are leaning to FFR?
I to started looking at FFR. By the time I got it optioned out to what was important for me, I decided on a Unique deluxe pallet kit. By the time I added all the goodies to that, I just bought one finished! There are some nice buys to be had.
Buy a plane ticket. Come to Columbus Ohio next week for DVSFIII. If you don't leave there knowing exactly what you want and from whom, it is a lost cause
It will be money well spent and I would guess that the trip to Ohio will save you more money than the trip costs over time. Hundred of Cobras and experienced owners.
Heck you may even be driving one home!
Rick