318 f.a.s.t class , oem stock appearing
I think the whole problem with this is for most people under a stock breather it's not to obvious that your running 2bbl and there's no way for the casual observer to know if it's a 273/318/340/360/408 etc... so the manifolds are the biggest sleeper factor. I get the appeal wanted to do the similar thing to a granny /6 a body with hidden Nos but unless your hustling street races I don't really see a point (around here real street racing die along time ago) your just gonna kill 50 plus hp for a 2bbl and manifolds.