OK. Got more work on the car.

The oil cooler line (hose with plastic T that goes into the engine block on passenger side), is leaking. Got the plastic T out and it is cracked along the T junctions both lower and upper, PLUS the plastic that goes into the engine with a small washer, is broken as well. When i took the plastic piece out, the o ring with rest of the plastic remained in the engine. Had to dig out with small pry 90 degree tool.
So now for sure have to order the oil cooler line. Unfortunately the plastic T does not come separately and you have to get the entire cooler line to get the T. I have not detached the rubber hoses from oil cooler, the hose looks fine, and leak was along the plastic. When part comes in, taking the T and will install into place. Guess job not tone.
Still to do, install coolant vent line (Y pipe in valley - tomorrow), line to driver turbo wastegate (after coolant sorted out and install drive belt, probably next weekend), drive belt, put intake back on and connect all the hoses/connectors, injectors, put secondary pump brackets on, pumps, and plastic engine covers. I am certain the hardest parts are done and now I am waiting again. Will update once more work done.
Below pic shows the oil cooler line T connector, and where it was broken.
TIP: Having a camera videoscope is a HUGE help...you can see the screw to remove, to be able to remove the T. Without it, you will be trying blind for long time.

 

Had the car completed and started it. Dead. Nothing.
Dead battery since car has been sitting for a long time.
Boosted from another car. Car started ran for a bit, I disconnected the cables and moved the other car.
Came back, car was off. Looked closly, serpentine belt is loose. Lifted up front a bit to see from underneath.
Looks like the power steering pump pulley broke in half. Before putting it all on I made sure all pulleys are not wobbly and spin freely. It was.
So I dont know what went wrong. Any ideas? The pulley itself is broken into 2 pieces.
I felt for the shaft with hand from bottom of car, at first thought sense wobble, but it was my fingers pushing. Took long metal rod to touch from top and the triangular shart is not wobbling, seems stiff and spinning freely.
So I dont know. Was it damaged in the first belt break? Possible. I would love feedback, as did so much and would be shame to give to mechanic to fix up the tiny rest.
I am ready to bring to mechanic unless I get some ideas. Thanks.

My idea was to buy puley, put on steering pump shaft and new belt (yes, saw secton that split length wise, assuming on a bolt from pulley), and try again. Any recommendations?

 

Forgot to make final update.
The car is up and running well.
To summarize, had to replace multiple parts:

1. broken plastic pipes that the splintered serpentine belt broke (3 of them by radiator)
2. Repair coolant leak at back of engine (where the coolant vent Y line connects to the rubber hose)
3. Replace power steering pulley (cracked when I installed replacement belt, you guessed it, ruined the belt too)
4. Belt tensioner
5. Belt tensioner pulley
6. Replace serpentine belt itself, twice (first replacement split once power steering pulley broke
7. Replaced valve cover seals
8. Replaced cracked coolant splitter pipe (going into front of engine)
9. Replace oil cooler pipe (since it came with part #6 already)
10. Repaired a cracked wiring harness for injector #2 (was damaged during the job - brittle and one wire frayed, shorting the wire to other side of injector harness - bad thing - battery short)

Most of it was very easy, just time consuming to get to, as cayenne turbo is famous for stuffing all sorts of ungodly wires all in a tiny space.
Hardest part was waiting for the parts to arrive, after issues diagnosed.

After I repaired everything, car would not start. Thought it was battery, but turned out to be injector wire shorting. Once I rewrapped harness, issue went away and all great.
Battery was also leaking slightly so I had it replaced with new one under warranty.