YTH 24V54 960430188 00 I had to search to find the model no that fit the mower. I found it under model no 960430259 00. To find the model number that showed the anti-torsion brackets.
I have to open a box to see what hardware is in the kit in the morning when I go to the shop. Images online don't seem right but it been a few years since I last use a kit. Maybe they changed the amount of screws in the kits.
That is exactly what the kit is for. You remove the current mounts ie cut them off. Of course the transaxle has to be removed first. And I have installed several of them on the Tex frame. Don't know about the other frame style. I keep both the vertical and slope repair kits in stock.
Vertical draw bar ( | ) just is the type rear frame part as is sloped draw bar ( / ). The slope one requires a different kit.
See how the draw bar is designed and it welded to the two side rails. BTW the transaxle axle mounts are part of the draw bar.
Now I would use all four holes instead three but that is just me. And there is a reason why four mounting holes as the plates were made to fit both LH and RH sides for alignment purposes. You will need a very sharp drill bit for doing the holes.