They are the type of thing which probably need to be custom built to the car. I have the Ford 400 in mine so the heads are higher and further out which meats these won't fit the 351 (and align). I think the headers are going to be a great alternative to the 180's. As usual several experts told me it wouldn't work but seems to be just fine. Some experts told me heat would blow the tire but under normal driving attitude it was actually further from the tire then when the exhaust is routed through the suspension.
The only thing I wonder is if it will effect the paint on the well. If it does I will add heat shield.
I really wanted to be able to use the tub and I wanted an open exhaust and this seemes to be the answer:
