On the oil pressure, I'd pull it. I've heard that turbos shouldn't be running the higher pressure. But then...is our pressure really that high?
Ya, go through all the work of pulling out an oil pump when you could... just... buy an oil restrictor! Zing!

Turbos at most need like 1/8 to 1/4 of max pressure of what most oiling systems run stock from the factory. I run mine like this: oil filter neck > oil AN fitting > oil line > tiny "filter" > oil restrictor/AN fitting > turbo.