Absolutely. The only time I would advise people to coat only the outside is if they are a GOOD set of proper stainless steel headers. Mild steel headers should always be coated inside and out. I'm hoping when I go to E-heads I can find a good set of SS headers.
http://www.TheFOAT.com/92GTA 1969 Pontiac Firebird w/BP 461ci stroker kit, 670 heads & XE274H cam. Primer black with black interior. 1992 Pontiac Trans Am GTA w/SLP Performance Package. Dark Jade Grey Metallic, grey leather, T-Tops.
