B7100 steering box

[Little tractor20]

I need a steering box for my non hst b7100d. What is the difference between an hst box and non hst steering box????

 

[North Idaho Wolfman]

If I remember right, just about every dimension is different.
The pitman arm is different between the two, so that creates an issue.

Without having both in front of me I can't point out the other differences.

 

[Little tractor20]

Thank you for the info