First of all, I do not have sfc, I know shame on me, I got a swing'n deal on a bunch of stuff that included 2 sets of full length through the floor sfcs, 2 sets of strut tower braces and some other stuff. I will not be useing the ttf sfcs and I got a mm shock tower brace that fits much better than the two others I have. I will be getting mm sfcs, the fit is better, they are beefier and well, they come highly recommended by most here that have more experience than I.
I have a roughly 300 hp threshold, thats all I need for what I do with this car, easy on the wallet, easy on parts, and I can drive it in stop and go traffic or across country at 80 or 90 mph all day long with no worries.
I hang with several guys that have 'race' cars that can be street driven. A couple of them are over the 600 hp level and all will agree, once over the 400 na hp level they become unruly on the street, not so much a turbo car, they seem to be more streetable.
Those are my thoughts and in no way endorsed by stangnet.com, it's members or its sponsors.
Now on with the regularly scheduled banter.