[rick3000]

I really depends what kind of maintenance you will be doing.

Here is a list of the things I purchased (does not include basic tools I already owned) when I did my first DIY service (oil change, trans fluid change, motor mount, coolant flush, center radiator install, oil pump piston, serpentine belt, MAF, throttle body removal/cleaning, etc). I spent the money on quality where I thought it would count, the Esco jack stands, the Uview, a Durametric, but I wasn't bothered about the various sockets that will only ever get used a handful of times.

Basic/General Tools, including:
13-19mm Metric Wrenches
Strap Wrench
Torque Wrench
Torx Screwdriver Set
Socket Set w/ Various Attachements

Jacking:
Esco 10498 Jack Stands
Wheel Chocks
Long/Low Harbor Freight Jack, about $150 on sale

Coolant System:
Coolant Hydrometer
Uview Airlift 550000
Hose Clamp Tool

Porsche Specific:
16mm Triple Square Hex (transmission drain bolt)
24mm Socket
Security T20 (MAF)
27mm Deep Socket + Tape (for spin-on oil adapter)
18mm-19mm Sockets
8mm-17mm Sockets
E12 Torx Socket (or 3/8”)
5mm Allen
8mm Allen
17mm Allen