REFERENCES: 6.1 Hemi  with Passion 5 speed into a 1969 Barracuda Convertible thread - forabodiesonly.com 6.1 Hemi  into 1968 GTX  by Street and Performance - outdated tech- hotrodlane.cc 6.1 Hemi into 1973 Challenger by HotRod Magazine - outdated tech but good info 392 Hemi into 1970 Challenger by HotRod Magazine - Newer tech good info 5.7 Truck Hemi into 1970 Challenger - noted for reluctor idea on differential yolk 5.7 Truck Hemi into Dakota - noted for  interface of wiring method