Welcome to the FFO!
I know nothing about those upgrades.
The working pressure for the fuel pump is between 35 and 40. Should be able to produce more pressure than that.
However, the engine was designed to run on 20 to 25 and higher. TO accomodate cold weather starting with a low battery.
If you decide to some how increase pressure, the lines and fittings should handle pressure in the triple digit range
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