'71 Duster 440 or 360? Pros and cons

The later 440 's fall out at about 8 to 8.5 to 1 compression. The 346 casting heads would have the induction hardened exhaust valve seats from the factory. Have seen a lot of the heads that were induction hardened crack between the intake and exhaust valves. With the compression this low you have to be extremely causous on the cam choice as something too large will gut the bottom end on power. Youll need a big block tranny, custom length drive shaft. The 440 can be put on a weight reduction plan aluminum heads, intake, wp housing etc that will get it down to about the same weight as the all cast iron 360, would have to dig out performance chassis book for exact numbers.