[Gunter]

Originally posted by NoEardGoat
The horn shaped thing is a disquistingly 80's (maybe early 90's) car alarm.

I believe the stamped number on the engine case is: 6314832

I found this on the passenger side just below the fan. Or am I looking in the wrong place

Common mistake:
Use a light, it's hard to see. NOT the cast-number on the fan post.
Go down on the right fan post to the engine case.
Clean the area. There is a stamped number:
If it's Euro: 930/10? US: 930/16

Reality check:
This is a 26 year old car. The 911 is only fun to drive if it is maintained and upgraded, meaning: $$$, time and a certain mechanical ability.
That car was parked for 6 years for a reason. Unfortunately, too often people store a car without Stabil/ injector cleaner in the fuel to keep the CIS clean and start it periodically.
Aside from the engine needing work, there are the brakes for sure, shocks, suspension bushings, tires, alignment, etc.
Heater- and flapper boxes? Muffler?
You may need a new clutch and the 915 transmission usually developes issues with first and second gear.
If the engine just needs a re-seal, figure a minimum of $2k, it goes up from there.
Be prepared for a lot of work before you start the engine.
Oil leaks can only be found if the engine is cleaned really good first, otherwise you don't know where it is coming from.
Once it runs, an inspection by a qualified mechanic may give you a better idea about the general condition; money well spent.

Read and read, especially about CIS.