fixitguy - 12/22/2020 08:28 here is another option, depending on what valves you have. Hope it helps.
https://www.ebay.com/i/164230288407?chn=ps&norover=1&mkevt=1...This one will allow plumbing without cutting a hole in the left seat support. I like this kit as it uses o-ring boss fittings that make orientation easier than others similar to this that use pipe thread fittings in the plate.
The other one is an exact match of the plates made by IH that required cutting a hole in the seat support.