1966 Valiant Signet 2drHdtp 318/904-CO

Yes all gauges work, just not the ammeter.
As far as torsion bars, they are what the factory used to give the car's front suspension it's handling features or what takes the brunt of the weight of the front....someone else may be able to explain it better.
Oh yeah, the 318 easily lights em up. Did so today as some young punks in a truck pulled up next to me at a light and were giving me looks like my car was a pile or that they had something better. As soon as the light hit green I nailed it and blew the tires away for about 30ft or so and I'm sure they loved hearing the near open exhaust at 4500 rpm right next to their faces cuz at the next light and the rest of the way to their destination they kept their tinted windows rolled up, lol.
I'm confident the car would make the drive to anywhere, now how much gas you use, I haven't a clue :)
Although at 75mph it will get a confirmed 19mpg.

Oh yeah, the coil over shocks are what's replaced the torsion bars.