NX Hitman kit + extras + full bottle.
 

Nitrous Express (NX) Hitman nitrous kit for 4150-style carbureted motors. This kit comes with:

-NX Hitman plate, solenoids, -4 feel line, and jets for 150HP.
-Full 10lb NX bottle.
-NOS brand purge valve kit (needs a new copper tube for the outlet, found in any auto parts store for $5)
-Holley adjustable regulator with fuel pressure safety switch and liquid-filled fuel pressure gauge.
-Auto-meter "Ultra Lite" nitrous pressure gauge.
-Competition Motorsports micro-switch for 4150 style carbs.
-Relays for solenoids and purge

it comes with various AN fittings and braided lines. The only thing you need is a fitting to tap into your fuel system, bottle mounting brackets, and an arming switch. This kit is about 8 years old and could use a quick cleaning, but it works 100%.

This is over $700 worth of parts to buy new, and the bottle is full with $50 worth of nitrous. Asking $400.