Craigslist 72 Dart Swinger, 413 Wedge

what do u mean??????????????? the headers at engine-swaps.com there are the schumaker ones duh

Have a look at the heads, they are Chrysler industrial or marine ones, so the Schumacher headers won't fit or work.
The bolt pattern is different out of the ports. A big tipoff is the front of the heads where the BIG cooling passage comes out. :banghead:
Have a look at them and read the previous posts, dude.
DUH!!!!!!!
That's why the guy is trying to unload it, no factory exhaust manifolds or aftermarket headers will fit, unless you go custom made. Big $$$$$$$.
DUH!!!!!!!
And you spelled Schumacher wrong.