(1) Forged Aluminum Crossmember used by the 911 RSR
(very different than the common cast Aluminum piece used by the 911 SC and the Turbo 930)

(2) Dual Masters

(3) Note the 2 bolts holding down the metal strap between the Forged Aluminum Crossmember
and the chassis. The 911 SC as well as the Turbo 930 only uses one.