slant 6 oil pressure

My slant 6 was rebuilt. Supposely they install all new guts..like main bearings, journals etc. This is my second oil pump install. my pressures are like 20 psi high idle. low idle 12 psi. I installed a manual oil gauge. Can somebody let me know if these pressures are good? My truck is a 1980 dodge D150. I currently have like 60 miles. I did a new oil change put in 10w-30 in hopes to get rid of any new part debri or slush.