I'm not trying to stir things up, just to promote my own products, but thought I'd give you the straight scoop on these.
A company in LA, which sells to almost all the suppliers, produces this header. Regardless which company you choose to purchase a header from, most all will carry this header, just with different pricing. When I first started selling headers, they contacted me and I bought ten sets. However, I decided not to continue selling them, as I prefer the more expensive Pacemaker and Pacesetter headers. Both the Pacemaker and Pacesetter headers (our FSPP headers are produced by Pacesetter) are fully welded inside and out.
The primary reason I don’t sell these, is due to the welding. They are welded on the inside only, and simply spot-welded on the outside. If the header warps and you mill it in an attempt to straighten it out, you’ll destroy the welds and the overall strength, as well as create pin holes. Some of the headers I recieved already had pin holes, which had to be repaired before I could sell them. Also note, most header leaks are due to three things, poor welding, warpage, and/or improper installation.
They do fit all 200ci applications, and they make versions for the 250 with the low starter. However, these headers also have poor starter clearance (the other reason I don’t sell them). I think they revamped the design, which helped, but I think you still have to remove the header to replace or work on the starter. But I could be wrong.
I’m not saying this is a bad product, just that you need to know what your buying. If you purchase one, and it leaks due to pins holes, the company you purchased it from should replace it or pay for the repair. If it warps, they may or may not replace it. Best bet is to check with the supplier and verify what their warranty covers (especially shipping cost), and what it doesn't. Most good companies will stand behind their products, but its best to check it out before you buy.
I was lucky enough to find a used header from another forum member that fits this application. I'm not sure if you will be able to find a set of long tube headers for the low mount starter application, but check with AZcoupe(Mike) of FSP and see if he has run across any. I know he had plans to get some made but don't think he has had to time to get to this yet. Good luck on your search. Probably your best bet is to search for a used set. 
