Quote Originally Posted by pkeane2 View Post
XR4: I think the fuel cell rule could be changed to something like the new AS OEM fuel tank rule. I will submit it to the CRB. IT cars can run OEM tanks in STO/U.

Z3: I misstated, intakes must be OEM. Yours is legal. Wild West! If your car has a 2.8 it has a base weight of 3080 with driver.
Peter: the STU rules state "Intake requirements. All cars shall use the installed engine’s stock air metering device (e.g. throttle body) and intake manifold, unless noted otherwise."

He has a 2.8L M52 engine with the intake manifold from a 2.5L M50. In other words, it's not the "installed engine's stock intake manifold." Therefore, it's not legal.