'71 Duster 440 or 360? Pros and cons

Check out my site if you want an idea of what you're getting into. I love the stump-pulling torque of big blocks and would do it again and again. Yes, you'll spend more money doing the conversion. Yes, you'll spend a little more on gas. I don't road race, don't care to, and think it handles just fine (I have heavy torsion and sway bars). Whether the swap is worthwhile is in the eye of the beholder.

As mentioned that WP housing appeared on '73 and up BB's. A simple flat top piston swap would bump compression up to 9.5:1 with those heads, if desired.