This is the right side bulkhead.  This works with all of our cars.
The aluminum version weighs 0.348oz (9.86g)
The magnesium version weighs 0.237oz (6.71g)

Magnesium is about 32% lighter but a word of caution: magnesium is a much softer metal than aluminum. Also note, it cannot be anodized, but it can be polished.

Sold individually.