Firecore wires with TTI's- Anyone have this setup?

No offense taken at all. I agree that nothing will equal doing them yourselves for the fit you want. I believe most quality wires are available in the DIY setup. Main goal is clearance from burning on the headers.

True enough.
I have a small block and the only ones I have any issue with is 5&7 due to the header pipe for number 3 running right across the top of those two plugs.
I have the long silicone boots and found about a piece of header wrap folded over and put between the boots and that pipe works to keep them from burning on the pipe.