Completed catch can install and the 4 driveline fluid replacements this weekend.
After a bit of engine bay dickering... I installed the catch can right at the PTC connection at the intake air pipe. If you follow the outlet of the stock catch can around to the intake pipe, it is a metal pipe that goes around the engine then connects with a rubber hose a few inches long to the PTC/intake air pipe. This hose Y's with one hose going behind the engine somewhere and the other hose to the PTC/intake air pipe. I disconnected this hose at the PTC/intake air pipe, put in a 90 degree adapter, connected a 0.5" heater hose that runs to the catch can inlet. Then I ran another length of 0.5" hose to the PTC nipple. I mounted the catch can on the fuse box bolt in the empty space on the driver's side of the engine. I secured the heater hose runs by the brake lines with zip ties. I tried to minimize the bending of the hose. I chose to run the catch can outlet hose behind the engine, behind the diverter valve connection on IPD's intake pipe and loop down to the PTC.
I inspected through the viewing window on the catch can after a 600 mile highway drive. Condensation made visibility difficult, but no or little oil was discernible in the catch can. I only hit high boost levels to pass a couple left-lane knuckleheads who decided they would rather drive slower in the left lane than keep right, and then try to speed up to prevent me from just getting home.
I may have noticed a 1" change in vacuum at shut throttle, where I had been at about 24" per the vacuum gauge, I see like 22-23. This may be coincidental. I am slightly concerned about the 90 degree bend and extra length of hose, and the catch can restricting the flow, but I suspect I'll be rewarded with a slightly cleaner intake in the future.
Car has 60k miles now.