I share a FF Cobra with my dad. It's a Mark IV we built years ago together and have about 5200 miles on. Our car is an IRS unit using the upgraded 03-04 Cobra diff with custom pin drive axles. This allows for a 315 mm rear tire and a deep wheel. Car rides great and turns stupid quick. Ours runs about 475hp and a Tremec which is a good balance of power/weight for reference. I've never weighed it but it feels like 2500 or so lbs. Yeah it's a fair weather car, but it's one of the collection that gets warmed up on a nice night or a fall cruise. On the right day, I 100% guarantee you it's the perfect car. If people ask me if it's real I just tell them I don't know. I bought the FF car because of the value. I didn't want a show car or a car that's "accurate ". I'm no purist. My research showed me it was the best engineered frame and suspension out there. After seeing several competitive products apart at a local Cobra specialist, I'm glad I bought what I bought. Yes, the Superformance and the ERA are more "accurate" cars, but I'm in mine $42k done and unless you're building a car to admire from a lawn chair who cares. Build time should be 18 months or less including paint jail. If you need references or help let me know.