69 Dart 5.7 "Butters" Build

I didn't even realize they made shorty G3 swap headers. Had to go look them up.

Just a thought, but I doubt the shorty headers are much (if any) worse than the OEM 6.4 exhaust manifolds and the 6.4 made 485 HP with those.
That's kinda what I was thinking as well. The SRT manifolds do have a 3" outlet but that get gets choked down anyway. This has been one of my hardest decisions because I'm like "more power!" but it's not like I really need it.

Other thisng is the ceramic worth 200 bucks..ceramic has a warranty. Bare does not

Here's a TTI link for a pic of the shorties mounted up

https://www.ttiexhaust.com/Classics-Hdr/6417825-Shorty/6417825.pic01.jpg