So, continuing down the list of discoveries:
There was a mess of wires hanging down under the dash. Most of it is for the aftermarket radio, but there was one wire connected to a toggle switch under the dash.
Click to view attachment One end of the switch was connected to ground. I dug into the dash and discovered the other end was spliced into the tach wire from the coil. So, it appears to be a shade-tree anti-theft device, grounding the coil to kill the ignition. However, that might also explain why the tach doesn't work.
Here are a couple more pics of how the fuel pump wire ran through the passenger compartment:
Click to view attachment Click to view attachment Speaking of holes in the firewall, I found this lovely on the driver's side:
Click to view attachment It wasn't connected to anything, but may have been a remote trunk release. Although, other than the hole in the firewall, I didn't find any other holes related to it.
Click to view attachment The fuel pump wire hole and the pull handle hole are the largest holes drilled in the firewall, but there are at least 10 other holes of various sizes drill in it.
Under the car, I discovered that the original vinyl fuel hoses are still in the center tunnel. However, they did splice in new hoses between the firewall and the engine compartment (stock vinyl hoses in the engine compartment, too).
Click to view attachmentAnd, of course, none of the heating parts are connected. They did install new stainless heat exchangers and a muffler. However, they are for a 1.7, not a 2.0. But, they did not replace the muffler hanger with the correct one. Instead, they drilled new holes to move it upward and then created home-made adapter brackets to connect it to the muffler.
Click to view attachment It turns out that the stainless heat exchangers are in really nice shape. Any chance anyone might want to trade these for some nice 2.0 exchangers? I'll eventually post pics in a "trade" post on the for-sale board, after I get a chance to wash them off.
Tomorrow, the plan is to drain the fuel, drop the engine and pull the tank (if there's time). Who knows what fun is lurking under the tank?