On my truck I have a garret large frame t6 remote mount. It’s mounted right where the stock muffler used to be under the bed just in front of the rear axle. The turbo itself gravity feeds an oil pump and I pump the oil back up to the pan. It was by far the hardest part of the whole system to get right. And when it wasn’t right it was really bad. Like oil filling the intake track, and a smoke screen out the back that would make James Bond jealous. It was very frustrating to get a pump that works. This is the pump I am using now and it flat out works.