440 in 72 Dart Swinger?

I don't think you would be unhappy with a SB stroker. This coming from someone who SWORE by big blocks but built a somewhat mild 408 for the avatar car. Plenty of room to work on, low 11 secs in the 1/4, and very streetable. Don't get me wrong....BB's are great. I love 'em!! But in these A bodies, a stroker made from a cheap 360 motor is hard to beat!!