The other thing for folks who are looking at car seats to keep in mind, for convertibles specifically, is to look at the height rating as well as the weight. On a LOT of seats, the child out grows the seat dimensionally before they hit the weight limit. (Another plus for Graco, BTW)
I’ve also installed the Head Wise in our 2009 crew cab Chevy Silverado, my 2004 2-door Honda Civic coupe, and a 2009 Honda Fit without issue. Since the car seat has a pretty wide range of allowed recline angle, it can install quite compact.