I have a 2000 Expedition. The second row is very wide, you can do 3 across with just about anything. I know I've done Frontier, RF Radian, RF Recaro Signo, and also two RF Radians and a Multi-Tech. Oh, and Frontier, infant seat, RF Marathon. My current set up is Monterey passenger side, RF Radian in the middle, and either an Amp, TurboBooster, or adult passenger on the driver's side. There is plenty of room for everyone to buckle and be comfortable. But I also wanted to mention that, at least in my truck, there is at least one top tether anchor in the third row. I think it's driver's side, but the truck's not here for me to check right now. I'll check later if no one else has answered more definitively.