Along with Fred's advice I'd suggest you consider a couple more things:
- Take a look at all of the plugs and open the distributor and inspect everything there.
- Check the battery terminals and the ground at the chassis connection. Clean that up if needed.
- See what the oil looks like. If the PO was crafty there may be a sump plate with a drain port. If not, you will have to split the lines between the tank and cooler. If it isn't clean do an oil change. Remember that final oil levels in a six are checked with the engine running.
- Remove the upper side trans plug and check the fluid level.
- If it fires you will be tempted to drive it so brake lines and brake fluid are easy checks.
If Mark is busy, Paul Abbot of Performance Oriented (
Performance Oriented) is a Porsche Weber guru. Paul can provide all the typical service, do repairs when needed and full restorations. He will test run your Webers so you know what's coming back to you. Well worth the money if you are not Weber literate.
Good luck with the find!