Sounds like it might be worth a try. I'm just trying to figure out what might be worth trying. There's no way to really know without trying it, but I don't want to try 20 boosters, so I'm trying to narrow it down the best I can.Well they are angled, position is very similar to the Frontier, but I have no clue if they're what you need. The Frontier does go quite tall, is she built narrow?
Yep, she's very narrow. She's about 50" and 46 pounds with clothes. Yet, the Parkway SGL (that I thought wasn't all that narrow) fits her great in the other car, but doesn't work with my car's belt. You can see a picture showing the problem here: http://www.car-seat.org/showthread.php?t=240637
I tried her in the Frontier 85 simulating booster mode: moved boot backwards, put belt through guide, but on top harness height. I need to check the manual because I'm not sure if that's even an allowed booster height, but I was really just trying to get an idea of if the belt guide works with our belt (yes!) and if she might be wide enough for it, and it looked iffy to me. Still, in another 6 months to a year when she outgrows that last harness slot, who knows. But I can't wait til then to make a decision because I need to hand down one of her Frontiers very soon. Worst case, I choose a booster that only works in car 2, but then I can't be the one to booster train her and I don't think anyone is all that comfortable with that. Probably way more detail than you needed. Thanks!