Dart BBC tunnel ram w/inj. adpt. RBS carries the Dart tunnel ram for all convential BBC cylinder heads when a customer want to run a mechanical fuel injection system on a naturally aspirated engine. The manifold is made from cast alum. to offer light weight for your race engine with a billet alum. plate injector adpt. The adpt. allows the use of any Bug, Bird, Little/Big Ugly, or any fuel injector that has the 13.250" bolt pattern. Please specify 9.80" or 10.20" deck height when ordering. The manifold does not include the nozzle bodies in the manifold they are there for picture purposes to show the racer where they locate.