Fuel pressure gauge

If you are pluming it all in new run AN fittings, super easy, they sell fittings for the 600 holley.
Using AN fittings you can put the regulator anywhere you want.
Keep in mind the closer to the carb the better, but mounted on the fenderwell the gauge will have less vibration and be easier to read.

Sombody posted this is a good place for AN fittings, I have not used them because Summit close to me.
http://www.anfittingsdirect.com/pro...=1203&osCsid=bcd66a4a22093b5f52f97e4a6c28d7f4