Blueprint 408 in '63 Dart?
I have a 340 in my 64 dart and everything is a pain in the A$$. I have power steering and a 4 speed with dougs headers. Well to be honest I had Wagons did most of the work and I think he was considering going Chevy after this. just kidding. You should also widen the radiator because you wont be able to cool that engine with the width of the 63 rad. I had to get a different ujoint for the steering, a mini starter, modified clutch linkage. oh and your engine compartment may be too short for anything fancy. The trans tunnel may be too small for a 727, even a 904 is going to be tight. Good Luck.