The bolts holding the starter on were on super tight it took a while to get them loose. But it's off now. The original plan was to put new brushes in it, but I ordered the brushes over a year ago, and can't find them now. Also, apparently we need the biggest screwdriver ever made to get to them.
After looking online, it seems the cost of a starter for the 944 has come down, so I'll be ordering a rebuilt one for $99 from Kragen.
We also looked at the Cadillac to see what fell off, The engine compartment revealed a huge chunk of deteriorating plastic that had fallen off the firewall. After searching for a while we discovered the bushing on the sway bar near the rear drivers side wheel had lost it's fastening strap and bolts. I'll have to find one of those.