Another thought on heat shielding that I'll be doing in addition to everything else. I'll ceramic coat the headers and then wrap them with header tape wrap. Many benefits come from this, but the top two are, 1) Heat to drop in the engine compartment by up to 70% and 2) with the heat staying within the header, thereby keeping the exhaust gas hotter, flow restriction decreases. Both 1 & 2 contribute to more HP.... always a good thing.
427 S/C, Flame Yellow, B2 Motorsports 427ci Stroker Dart SBF, TKO600, 3.73 Posi, Avon tires and so much more.