Whats the link to the Stewart Warner??

 

Go straight to Summit Racing.That is where I purchased mine.

 

I agree. Steward Warner electrical 100 psi is great. Just under $100 shipped. I have one and its accurate from what I can tell. I bought mine because of my nitrous set up but now Im selling my nitrous set up, but the gauge is cool so Im keep that. You'll have to buy an adapter for the fuel rail.
If you need help on this, shoot me an email, glad to help.

By the way, the gauges are good cheap insurance. I dont know if you wrote it before but a fuel pressure safety switch is good to. I read somewhere a while ago that if pressure drops below ~33psi, its dangerous!

What does full sweep mean?

Good luck.

 

Full sweep has to do with the arc of the guage needle.The spacing between the graduations gets larger with a full sweep model and is easier to read the smaller graduations.I believe the Stewart Warner has a 90 degree sweep.Most of the high end guges have a 270 degree sweep.Much more expensive though.