New to forum, but yes they do.
I have a set of Dynomax ceramic (inside & outside)
coated, on my 78' F-150 2wd.
purchased from SUMMIT Racing. $205.00.
send me your e-mail address and I will send you a picture of the install.
hey, want some awsome headers call L&L products, they make headers made specific for your application call 1-800-526-0064 D&B sales. bought a pair for the 472 cu,in. in my ford a bolt on 40 hp. they guarantee it. call them and talk to them ya can't go wrong. if there to expensive then go the other route. in my words best headers money can buy and no header leaks either. have a great day. later...