I have a child with special needs who is too big for a car seat but not ready for a booster as he will not sit in the seat properly and ends up wrapping his feet in the lap portion of the lap/should belt. I purchased an EZ ON Y-86 Harness which seems to be the answer to my prayers. The harness anchors in the top tether and the lap/shoulder belt (using a locking clip) threads through the loops on the bottom of the harness. It appears that I need to know the weight limit for the top tethers but can't locate this information for a 2006 Acura MDX and a 2007 Honda Pilot. Can you provide any guidance? Thanks!