Added the fuel fitting referenced by GMCWANTSLS1.... perfect to hook up your 1/8" NPT fitting from your fuel pressure gauge/sender to your fuel rail -04 AN 7/16-20 fitting.

Thanks Jeff!

https://www.exoticperformanceplus.com/catal...x.html?item=744

An alternate method using Russell fittings from Jegs.com...

799-614204 -04 female to 1/8" male
799-661441 1/8" NPT female union

Another helpful fitting for an inline -04 AN line is...

799-670290 has -04 male on one end -04 female on other end and tapped 1/8" in the middle for the gauge.