TTI Problems - Annoyed!

I don't think it is the headers or the mounts that are the problem. Keep in mind that on slant 6 mounts, you have to cut and drill one of the motor mount ears on the k frame in a certain spot, otherwise, the motor won't sit right and fitment becomes an issue. Schumacher provides instructions and templates but those are only as good as the installer. I'd you're off a 1/4 inch in one direction, it could mess everything up.

Just a thought