Confession I was trained as a "fitter' by one of the big Euro auto companies while at university,I am a tool hound and have lots of space for this fix-it hobby. The tool collection is huge. But inadequate for this car !
The problem is
access.
Yes ,of course I have several different configurations of the same size wrench but if it does not reach or fit around an obstruction - you need yet another variation of the same 13mm wrench.
Here is an example I bought recently:
https://www.matcotools.com/catalog/product/SRRFXLM52T/5-PIECE-EXTRA-LONG-DOUBLE-BOX-FLEX-HEAD-RATCHETING-WRENCH-SET/
A fellow lister described tracking an elusive CEL to a loose electrical connector deep under the inlet manifold.The only way he could reattach it w/o removing manifold(!!) was to use extra long forceps - I've got them too !
I like tools but on a tight budget this car could be a problem.
If only the rear clamshell was hinged . Some of the Italian exotica have that feature.Pity Porsche did not emulate.