LMAO again i had Stainless diesel manifold, its a nice piece i would just rather have a solid billet piece thats repairable with a lifetime warranty so if something goes wrong the Steed Speed will take care of it. If if you want them out of stainless billet that can be done as well, manifolds come coated so no rust to worry about and no failures yet! Steed has been building billet manifolds for years perfecting the market. The new powerstroke 6.0 and 6.4 manifolds are bad to the bone. Weve had had no failures yet but not to worry cause ive worked with Steed Speed on any custom configuration ive needed. For the average guy a Stainless diesel manifold is fine, for customers who want the best quality, warranty, and hp, they go steed speed. Like i said before i bought a stainless manifold then when Leen sent me a steed speed i was SOLD, theres nothing better on the market and he will work with his dealers to make a custom product. Stainless manifold just comes up short.