All of the following information was found on: http://www.car-safety.org/rearface.html
The following models all have above average height and/or weight limits for rear-facing use. These may allow children to face the rear for safety longer than many other models. Also listed are the rear-facing weight limits according to the manufacturer. Most of these models are taller than average, with the possible exception of the Cosco Scenera that is listed primarily as a value option. Please verify these yourself in case of errors. All current convertibles can be used for extended rear-facing beyond 20 pounds and models not listed may have ratings similar to the examples below.
Sunshine Kids Radian (65SL - 40 lbs., 80SL or XTSL - 45 lbs.)
Britax Marathon 70/Boulevard 70/Advocate 70 CS (40 lbs.)
Safety 1st Complete Air (40 lbs.)
Learning Curve True Fit models (35 lbs. but taller than most)
Cosco Scenera (35 or 40 lbs)
Evenflo Momentum 65 (40 lbs.)
Evenflo Triumph 65 (40 lbs.)
Graco MyRide 65 (40 lbs)
