So I was gifted a Safety 1st 3 in 1 Go and Grow Air+ and its a nice carseat but I tried installing it in my car and it is just freaking me out. The 2010 Kia Soul down at have a latch area for a front strap when rear facing. I've tried to rig it any way possible but the top part of this carseat can go an easy 2-3 inchs back and forth. The bottom doesn't budge but the top is crazy. I don't feel comfortable with my son in it at all. Any recs on a seat that goes in a Kia Soul well? A Convertable one is what I would like to spend money on. My son is still rear facing but is just to big for an infant carrier now.