How much coolant should I drain out before doing my Super charger coupler? Where is the easiest way and place to drain it? Thanks

When I pull a Supercharger I remove the thermostat housing. This brings the coolant level down to the level of the LIM.

I like the Dan method as it ensures the right level. Also have tried a few other things with luck. I've siphoned about 1/2 gallon out of the radiator, opened the drain **** and also disconnect the lower radiator hose.

All will work .. depends on what you have available and how much other stuff you might be considering at the same time.

Thanks Gents well here goes wish me luck.........

You will be just fine. There are several write ups in the tech info area covering the supercharger.