Mine gets 25 MPG at 70 mph with 3.91 and 28 tall tire in an A body. Yes, it has a .64 overdrive in the 5 speed.

Is is quick as h*ll, no. Can I drive it anywhere, yes. I built it for that reason.

Reliability is great, because as mentioned earlier, it has factory efi and the DLC connector. go to any dealership or autozone and get the codes and trouble shoot from their

I love it, but would probably get beat in several street races.

All up to the end goal of your vehicle.

JM