3.8 to 351W conversion

[GodStang]

I am looking to do the same. You need different rearend gears, suspison, and engine mounts. You can use the same manual transmisson if you want but you need different fly wheel and clutch. New radiator and fan. there is not much you can keep. If you keep the same rear gears when you press the gas pedal for the first time you will ripp them up. Go with a 3.55 if you are supercharging or 3.73, 4.11 if you are natural.