When ordering from Year One try to order as much as you can at one time and either do it on the 'net, or get one of their promo codes from a magazine ad. You'll get nearly 25% off everything that way (on orders over $1000). But, DO NOT order PUI interior stuff (seat covers) though Year One. Go straight to Legendary. They'll match the price and they are the real deal - ask me how I know.
I hope you KEEP the 318. You'll save a lot of money and you can build it to 425HP by following several articles by HotRod, MoparAction, etc - all available on the net.
Eastwood has ALL the paint colors you need for the wheels, grille, tail panel, etc. Any body shop supply has the rest.
Good luck!!