I second to go with the Ford parts. The Dorman won't last nearly as long, 5 years if you're lucky, but that's how long parts from Advance Auto last in my experience. I won't go into my usual Advance rant, lol!

I removed a Dorman from my T-Bird, and the integral gaskets looked like they were made from cake icing. I had two leaks, both of them well hidden.

2004 CVPI - 85k miles
1997 T-Bird LX - 85k miles
1994 Supra Turbo - 107k miles
Previous Fords:
1988 T-Bird, 1995 T-Bird, 1996 Cougar