It's got the lean burn 318, and yeah the performance isn't always that great, but it does fly on the highway pretty nice. The great thing about the 318 is that it never sounds like its working hard. Even when you're flooring it, all you hear is a nice rumble.
I'm almost positive its got the 904 but the guy who sold it to me claimed it had overdrive. I have to find out for sure.
Either way the car is great. Soft ride, amazing brakes, and power everything. The first owner was a retired cop, the second owner got it in January to settle a debt, and sold it to me. It still has the original whitewalls and I was the first to use the jack.