I don't think you will save much weight. All my lines are braided SS with aluminum fittings.
The weight is not that significant of a savings.
Steve
Sorry to go slightly off topic, but the guys at Aeroquip advised against braided line throughout, can cause a spongy feel in brake pedal. Probably wont affect Steve's racing style, but they advised against it for regular racing...and that's from a company that could have sold alot of $$ worth of parts, so I will go with their advisement.
How did you weigh the chassis? If you didn't use all four scale pads, it could be off. If used all 4, what were the percentages? That would let you know if someone filled the left side with lead or something like that