...between an original ('05?) Juicy 7 brake (per wheel) and a current BB7?

I'm an Avid man, and I figure I can lighten my pig of a 5"-travel bike by swapping my old J7's for new BB7's, 'cause I have BB7's on a different frame and love 'em.

Trouble is, it's hard to find any reliable weight info on the old J7's.

Also, I just read of the famous problem with the rotors on the old original J7's. I've just suffered with the "turkey gobble" all this time thinking it was a quaint quirk of the design, now I REALLY want to swap them out!

Any opinions on the weight saving actual numbers would be appreciated.