[MidOHasp]

While none of them are safe, which I already said once, there are differences.

Fact is, modern suspension geometry, frame welded on a heavy jig, etc... *helps*. Kind of like a band-aid of sorts if we are talking about safety...

I think having a modern frame and suspension, 4-point safety harness, a roll bar that is at least 3 inches taller than you, a full (or dual) rollbar if you have a passenger when you are out blasting triple digits, etc... help greatly. Fact is, if your car breaks apart, there's not much to protect you. If your car holds together, crushes in the right places, and it holds you in your seat, you have a better chance....usually.

I will speak from experience and say the SPF does not get dancy or light over 100. Or over 120 for that matter. Couple of times at 145+, not exactly confidence inspiring, but... not a harrowing experience, either.

They're all very different cars. But if you want to spend time over 100, regularly, I don't recommend building your own out of Mustang parts. There are FFR's that I'd trust at the speeds I talked about all day long...but I would have to know the builder and have seen the parts. In a truly self assembled, donor-based car, that is the nature of the beast. Some of them are truly spectacular at all levels, and some of them I would be afraid to sustain triple digit speeds in, you know? Not a slam or a negative thing, just a fact. Matter of safety and vehicle integrity.

SPF, ERA, Kirkham, Shelby, Unique, Classic, Factory Five... you name it, they all (and others) have their +'s and -'s. But if you are talking about a lot of fast driving, I highly recommend one with an extensively engineered chassis.

Good luck!