Other than the aluminum intake weight aiding in assembly for some of us who may risk injury tossing an iron intake into the engine compartment I don’t see knocking 20 pounds off of the front of a 3800 pound car being that much of an incentive.
If you aren’t physically able to install the iron intake, invite a friend over for lunch to do the heavy lifting and git ‘er done.
I like using stock components whenever possible mainly because everything fits, no messing around with throttle cables, PCV hoses or fuel lines.
Not to mention the Pontiac engineering department gifted us with essentially a race design intake, a slightly modified 421 Super Duty intake. Not many other factory iron 4-barrel intakes are worth using, consider yourselves lucky.