TIGHT Fit.
If anything my engine is a little close to the firewall, idk if that has anything to do with where it mounts to the alterkation kit, but then I look at the z-bar and if the engine were any farther away from the firewall then the z-bar wouldn't be straight. I haven't had to beat the headers to death, just little indents to ASSURE clearing as they clear but only barely. The part I had to dent to provide a clearance was for the steering shaft, but from what I understand, the power rack prob wasn't too compatible with the headers. Regardless, it's still a lot better then the damage I had to do to my last set of AWFUL headers, lol