It's a 4 cylinder 2.5 liter with a reported 150 hp, although my son who has driven it says it feels a lot quicker than his 1986 Nissan 300ZX with a 3 liter V6. The engine is out front, the transmission and rear axle ('transaxle') is all the way in the rear, connected through a torque tube.
We've been working on it - currently replacing the clutch which is quite a job (workshop manual has it at 16 hours but I think that's understated), new tires and shocks/struts and a few small things here and there. There's a good service history with the car and it looks to have been garaged all of its life and has always been registered in Southern California. I haven't been able to find a spec of corrosion anywhere.
We decided to replace the spark plug wires with a new BERU set and, upon checking the old wires, that are supposed to have 3K ohm resistance, the no. 4 cylinder one read nothing at all - no continuity, no resistance (not even to the highest ohm range my tester goes, in the millions) so we think that wire/plug is shot and explains a rough idle, half the spark is happening in the wire.
We'll do some real-world acceleration testing once the new clutch is in. It's a fun car to work on, especially one this clean. So far not a single bolt that has given us trouble, not even the ones on the exhaust or the driveshafts despite many of them untouched since 1983. The car's mileage at under 90K is original.