I'm a father with two toddlers that ride in my truck every morning to daycare. I have an extended cab Silverado (full size pick-up) and both kids ride in the back. My daughter is big enough now that she needs to inherit her older brothers RF/FF seat so I'm in the market for a shallow convertible booster for my son. He definitely still needs to be in a 5-point harness but I'd like a convertible so this is the last seat we buy for him. His mom is shorter than I am so he rides behind the passenger seat but even with her legs VERY close to the dash, his legs don't fit behind the seat so when mom is with us he is uncomfortable. I need the safest shallow convertible booster I can find (that's affordable) so the poor boy has some leg room. Help and Thanks!