Fuel pressure gauge?

Just installed my Holley AFP regulator, but i dont have a fuel pressure guage yet. Until then, i need to ensure my car wont run too rich or lean. Where is a good place to buy a cheap mechanical fuel pressure guage that i can screw onto the schrader valve?

Also, what numbers should i be looking for after i prime the pump, as well as after startup.

My fuel system is as follows:

Walbro 255
SVO 30#s
Holley AFP regulator
Stock rails

Any help for me?

Most any parts store will have a gauge in stock. I bought mine from Advance.

Shoot down there and see what they have.

Most any parts store will have a gauge in stock. I bought mine from Advance.

Shoot down there and see what they have.

and i should be able to just screw it right onto the schrader right? thanks for the help

also, what is the point of a 0-15psi mechanical guage? if the cars are supposed to have 43.5psi during priming, how does a 0-15psi guage help me? Thanks guys

Yep - it'll screw right on to the Schrader valve.

0 - 15psi gauges are used for mechanical pumps on carbed engines. Carburetors use a much lower fuel pressure than fuel injected engines.