The headers that were on my car number 2040 covered 1/3 inch width of each exhaust port. The Roush engine had AFR 205 heads. I'm not sure if there are new headers that are wider though. I put on some other headers. Here's the old header and what I replaced it with from the Olthoffs.
I'd like to see the "402" headers if anyone has a picture of them off the engine.