The pump is easy to replace. Getting access to it can be a little tricky, especially if you have power steering. One of the easier jobs tho.
However, I've never seen/heard a loud mechanical pump. Are you sure that the noise is coming from your pump?
so you have an electronic pump?
how loud? you should be able to hear an external electric pump.
yeah it's pretty much a constant sound, and i can't really hear much over the sound of the V8 so im not sure about the sound when it's being driven.
and i've owned it for a couple weeks now.
OK. You might consider, crawling underneath or wait for an oil change interval, and see if the isolation bumpers are in place. These are little rubber washers on the mounting bolts to reduce vibration transmission to the body.
Happy Motoring!