does anybody know what size the round pipe is on the push bar?
yes :D
this should get you in the ballpark
Diameter of the bars: 2-3/8".
Center to center the bars are 8-1/2" apart.
The overall width of the push bar is 36-1/4".
The thickness of the upright pieces is 1/4" .
The depth of the uprights is 3".
The top of the lower bar lines up vertically with the center of the bumper.