I have Torque pro so no.
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New AcDelco pump ordered.
The old pump would idle at 45psi but under wot would drop to 37ish.
This should fix the fuel pressure problem. and hopefully the rough idle slight miss problem.
If it does not fix it the only thing i can think of to do next would be to put the original GM cam back in it. Maybe pull the heads and have a good look at them.