Here's my dilema. 04 GMC Sierra Z71, 5.3 with no oil pressure. I'm calling my gut feeling that its an internal issue and not the pump so I need to replace the engine. I do not want to have to get rid of my 4l60 yet or for a while. This truck is a DD with minimal off road use and makes frequent 600 mile round trips on the highway so I'd like to maintain as good of mpgs as I can get.

Option 1: Approx. $3000 for a brand new OEM GM 5.3 (58x), fully dressed long block (intake, injectors, coil packs, oil pump, headers, pulley's, etc), 58-24x converter box, misc wiring adapters to make the engine a full plug and play.

Option 2: Reman LQ4 off ebay for $2800, I would have to swap all my stock stuff onto this block, all has 130k miles of use. So I would probably buy a new water pump at least.
Then I would have to get a tune and worry about how long my 4l60 would last.

I do plan on adding a Trick turbo setup at the end of the year not for crazy power but to help with any towing I might do and just because I want one.

I don't want to buy a junkyard 6.0 as odds are it will have to be rebuilt sooner or later and I'm in the same situation right now. I just want to get the truck back up and running and worry free for a while.

Shoot away....