I am looking for a heat shield (preheater shroud) for my 68 350 HO 4 bbl. I cannot tell by my research if this is the same one that the non HO cars use. However, I sent an email to the Ames tech department and they said that the one listed on their website (FN406C) will only work with nonHO engines manifolds and not the HO which leads me to believe that there may be different types of heat shields. Anyone know what is the the correct heat shield for my car?
