Don,
Your car looks so familiar. I think I saw with the same engine compartment in my garage!
I removed my seats yesterday. What I did was I slid them all the way forward and removed the 2 bolts at the back of the seat rails on each side. Then on the side of the seat there is a small lever sticking up. Just push the level forward and lift up on the seat. Mine did not have bolts at the front and back of the rail, nor holes for them.
Your engine compartment looks kinda normal for most non-restored 914's. The battery tray is gone, and the rest isn't too good. It looks like your inner wheel house is pretty rusted. Luckily PP carries one of rhe parts needed from Restoration Design, Inc. PP carries many of their stuff so you could checkout the
www.restoration-design.com website for part listings and order there if PP doesn't carry them.
I have the same problem, so I'm going to drop the motor in a few weeks after doing some preliminary body work. Then I'm going to replace the inner wheel house and engine tray. Battery acid has also destroyed the seam where the firewall and floorboards come together, so I will be replacing the floorboards and lower firewall metal as well. Those can possibly be fabricated if not too large of sections are needed.
You many also inspect the inner longitudinal, lower wheel housings up front, and the front trunk and pedal area for other common rust. The inside wheel well and logitudinal are structurally more important than other things.
Also, PP is the best Porsche supplier out there that I have found. There are many good ones, and many not so good ones. I've heard lots of bad things about AA and Part Werks. Unless you can drive there and pick something up, I'd use them as a secondary supplier.
Good luck.