Just a quick heads up with the moroso sumps (not specifically the 3sgte) is you may have trouble fitting the sump if you wind all of the studs in before you fit it. If you do try, make sure you do a dry fit with no sealant, just in case it wont go on.
Sump looks good, i hope it helps your oil pressure issue, if not maybe look into a 1 quart accusump.