Oil Pressure Gauge issue

A pic or two would be great......Your telling me about being cramped for space......How the hell do people put big blocks in Dusters. There seems to me no room with a 340 and the 4 speed clutch hardware. Thanks

Wait , a sender and oil line ?? I have a mechanical oil gauge under the hood mounted on the firewall, and one in the dash , both copper lined , no sending units !!