Thanks for posting Jay,  
Looks like I'll save around 155lbs off my original stock set up by using ally heads intake and headers.  I was wondering about that.  It might help make up for the too short front springs, lol.
PS  these FEs are relatively light for the HP output, I spent a few years playing with Studebaker 289s @ 650ish lbs with no ally parts available.
Phil.