Originally Posted by mrgtx
Obviously, this is a worthwhile chasis mod...
I disagree with this idea. If you really want a noticable improvement with the chassis/suspension, look into a Watts link. I think the rear cross brace is a cosmetic item, especially for a street car.
For a racecar, there would be a completely engineered chassis upgrade that would probable include the rear seat crossbrace though on it's own I don't see it's significance.
The rear seat deletes, however, have shown to offer a 30-40lb weight savings. JPC and Evolution Performance also offer delete options.