440 in a 68 Dart?

Read through the Big block tech threads. Lots of info on this. 500 HP is easier with a 440 than a 383. P/S and a 440 =TIGHT! Schumacher makes headers that will work with P/S. The kick down shouldn't hit. 69 440 Darts came with autos so with the right linkage shouldn't be a problem. Good luck!