1 3/4" headers

You might notice a bit of difference from the D453, dougs, tti step, tti 1 7/8, or 5204 hookers. Not enough to justify the cost of one over another. I hate the hooker comp headers and their cheapo copies out there.

That engine MIGHT make 475, headers are NOT going to be the choke point

JMO, after seeing so many different SB Stroker combos in the same range and header changes.

I'd buy D453's from autozone with a 20% off code and go with it. Save some money over the alternatives.