No. How do you shut off the fuel flow when the engine quits.
That is the inherent safety with the existing fuel pump
No cylinder pulses, no fuel pumping
There was a round gauge conversion kit back in the 90s. It's been NLA for 20 years. You may be able to get the later DP-D and later setup
I moved my square trim gauge out of the main cluster on my rebuild since I had just replaced the trim gauge
If its really stuck, and only iff its really stuck. just use a vice-grip on the plug and a vice-grip on the hose end hex.
when tightening, NPT is only 2-flats past finger tight
I would throw that filter away as you should have the fuel/water filter upstream.
however the hollow conical part goes against the incoming stream of fuel, the spring holds it against the fitting.