Quote Originally Posted by 66black289
Does anyone know where i can find a set of gt40p headers for a 66 mustang.
I would try sanderson.com - they have a lot of header applications. Also, do a search on here for gt40p headers. I believe 37 ford has a thread running and there are pictures of a rod with some on it. You may be able to tell by pics if they will work. I'm going to be buying "P" headers soon for a 55 effie, but I'll have lots more room than you.

Good Luck!