Went to the dyno--really lean, help

[Capri306]

Was fuel pressure monitored at all during the pull?

If not, I would get a gauge and see what it's doing on the street (WOT up to ~5800 and 2nd or 3rd gear should tell you where it's at when the fuel injectors are near saturation) for some idea. A new fuel pump, injectors (because I'm paranoid about faulty injectors due to a project a long time ago), and a stock replacement fuel pressure regulator would be on my short list, just to be sure, if it were my car.

You're already doing the fuel pump, so another 30 minutes of work will ensure you're getting proper fuel pressure and volume. 155lph seems a bit much for a stock fuel system, but that's just me.