I can tell you this, based on my small block:

complete aluminum 6-pack setup, including factory t/a airclnr is 60 lbs.

edlbrk ld340, holley 3310, ~15" airclnr is 30lbs.

i like the 6-pack and its power/performance, but the frontend weight saving of 30lbs favors the eldbrk/750 setup ... (improved handling intentions spoken of here).

Mopar Mitch "Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers! Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!