Evan
While you may never "be wrong", there is an immense amount of evidence that you are, on occasions far too numerous to list here but sufficiently published to make it self-evident, full of sh!t.
SAI puts the bare aluminum block at 125lbs. ERA's site compares the complete 427 iron engine (alum. man.) at 610lbs vs. 460lbs for the aluminum engine.
Extended durability--ok, the heck with drag racing. You're talking to an Audi owner. Three successive LeMans wins with multiple placings by R8s running twin turbo aluminum V8s--not even a burp from the motors.
Don't try the weight distribution bluff with the owner of a Butler--with a small block set back 12 inches from "stock", I enjoy 52/48! Just don't.
Come on--you don't even get to a trial on the merits on this one. An SJ motion and you're done.
BTW, the polling numbers here are as valid as:
a) A Florida election count, or
b) The drag race between you and Turk (formerly in charge of counting ballots in Florida).
