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What oil pump are you using? How is the fit, ground clearance, and turning on the A-Body Duster?

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The idler arm does hit the oil pan when making hard right hand turns but not enough to bother me It does have hedman fender well headers also so that may have something to do with the turning radius also I use a either a Mellings or Speed Pro high volume oil pump, which ever one is cheaper at the time I'm building the motors I build I do cut the bypass spring down to lower the oil pressure to get 10 lbs. per 1000 RPM, stock they make 80 lbs idling when cold That is the bypass pressure usually so I let it warm up to get the oil hot and then whatch the oil pressure readings on the dyno test and cut one coil off at a time and then make another pull to get the pressure I want One complete coil is usually enough to get 70 lbs at 7000 RPM I cut one half off to much on my 518, it ended up having 65 lbs at 6500 RPM and the same at above 6500 RPM, that is with 5Wx20WT oil hot