I was wanting to get a fuel pressure gauge to add to my collection. Im going to go with the AutoMeter Ultra-lite to match my other ones. Which one do i need:

1. 0-15 psi: outside mount
2. 0-15 psi: with isolator for inside mount
3. 0-100 psi: outside mount

Im guessing #2 is what I need but wasnt sure. I think this has been discussed before, but I was planning on maby putting a T fitting on the bleeder screw and running my pressure from there. Im getting a FASS150 in the near future so will I even need the T fitting, or could I just eliminate the bleeder screw.

Thanks,
Brennan