I'm running a Wix 51258 filter. Sending unit is stock setup off the filter housing. I'm with the filter adapter for long branch manifolds.
I had all this on my previous 455.
Gauges seemed very normal before. Always around 60 psi. The old motor also had a SD pump but with no mods.
The motor is used, I bought from a member here that drove it for many years. So I have no clue on the clearances.
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