Ok, I have Hooker headers on my 69 LeMans and the bolts are a real bear to deal with. I haven't tried Hedmans yet, I hope they're better. That's mainly why I was leaning towards stock. Does anyone have a pic of the 56 manifolds? This is what mine look like.
Many Thanx 67 Firebird 400 conv 69 LeMans 400 auto od