Congrats on going with a 360 on your Dart build. This thing is really gonna scoot.
I've noticed that many Mopar Guys who rebuild the later year Darts use the 318, usually because it came with the Car. They'll never know what they're missing, unfortunately.
That 73-4 Dart Grille is gonna look great also...much nicer than the Current Grille.
Although itza 75, here's a pic for incentive...Shows just how Cool these later year Darts can look, when done RIGHT...and that's what your Brother would have wanted. :glasses7: