Can't help with measurements...maybe your dealer can??
I recommend the John Deere toothbar. I looked into several others, happened to drop by the feed dealer who also sells John Deere, saw a number of different width bars leaning on the back wall. Talked to the owner, he sold me the one that most nearly matched the width I needed (just .5 inches too short, washers fix this) for less than I could get one sent via UPS.
The bar is awesomely heavy...136 lbs...it has barely lost any paint and I have USED it. Don't know what it would take to dent or bend... more tractor than I have, am sure.