383 in 68 Dodge Dart? new build

Well let me add my 2 cents, I have a 360 in a 70 dart, I love my car and will never get rid of it and won't go through the expense of swapping to a big block. But I wanted a car nearly done when I bought it and found one with nice paint job and color I wanted and a very good newly rebuilt 360. Having a big block was not a high desire back then or now. But I do look at them big blocks every now and then and think "man be nice to have a big block in my Dart." But if I had wanted a big block back then and passed the chance to have it, I would be kicking myself, especially if I had done it the way you plan to. You will probably never look at that 383 big block that you built for that car and think, "wish I had a 360."