People are saying nice things in hopes of getting an allocation. Most buyers I know are not happy with the added dealer markups, fake “lines”, zero inventory at dealerships, missing options at delivery, and general smugness. Except for me, my dealer is perfect. (Still waiting for my GT3 allocation).
Situations like this rarely get better. You may find that the title has issues which has delayed the transfer. Unless this was a really special car to you or a great price, I would tell them you are exercising your right to unwind the deal and walk away since they failed to disclose pertinent information. I agree with other posts that there are many used (and new) Cayennes available for sale currently. New Cayennes (except for hybrids and Turbo GTs) are typically being discounted 4-6%. Its Porsche’s top selling model so supply is not an issue. If they persist demand a significant price reduction as a final offer.
The SC is considered among the most reliable 911 models. My concern would be that it has a safety design and equipment that is now over 40 years old. No ABS, no airbags, etc.
A later 996 or 997 would be in the same price range and have much more modern safety equipment. They are both more involving than newer 911s yet have modern safety features.
If it was me, I would prefer to have a newer car to put my family and myself inside of if I planned on driving it very much.
I suggest the new car would be better overall. I say this as a 992 owner. As long as you don’t mind the quirky interior, its a bargain.