I don't think you would get anywhere near the recline needed for a newborn with a Radian in that vehicle. With most seats you're able to increase the natural recline (which is dependent on the slope of the vehicle seat) by putting a tightly rolled towel or a pool noodle at the seat bight, but Radians don't allow that. Since it's imperative that you protect the airway of a newborn, and an overly upright seat will cause the baby's head to flop forward, you're more or less stuck with what you get with a Radian. Either it works or it won't and if it doesn't there's nothing you can do about it except wait for your baby to get older so s/he can tolerate the more upright angle.
Here is a Radian in a 12 Focus, but this is installed with the angle adjuster to make it more upright for a 3 year old. It's as upright as I would ever want it, and without the angle adjuster it's still quite upright. Even at that upright angle I almost can't sit in the front seat and I'm 5'8. Without the angle adjuster the front seat would be completely unusable. I have not tried it in the middle but I doubt it would be better there. Note that it's not touching the front seat, although it looks like it is.
If your seats are not leather it might make a difference, so if you have access to a Radian it's worth a try without the adjuster to see. You're aiming for about a 45* angle where the baby's head would be.
There are other convertibles that would work from birth and I'll let a US tech chime in on your options.