-3/8-18 NPTF-, V8, Chevrolet small block, with factory gauges & aftermarket or 1981-up cylinder heads... see more-3/8-18 NPTF-, V8, Chevrolet small block, with factory gauges & aftermarket or 1981-up cylinder heads which have a smaller sending unit hole (correct resistance and connection, produces accurate gauge display)
1st design: with seat belt interlock system (2 required per car) Note: Wires to be... see more1st design: with seat belt interlock system (2 required per car) Note: Wires to be soldered onto switch inside seat belt buckle assembly and connect to the Rear Body Intermediate Harness