Just mount it near the fuel tank like everyone said already twocents
All cars and exhaust systems are different so you will have to figure the best place for your application. I mounted mine on the right rear frame rail but if you have a full exhaust that might not work for you. shruggy

Gus


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60