The seat Todd recommended is real nice. I mounted it a little higher than normal due to the sliding feature and I still wanted the seat to tip up too.
Cheryl even likes it! (just doesn't have a cup holder

)
The info on that slider with the folding back and folding arm rests is buried in the thread "added more IH equipment". Where I worked on the 147R.
Hope this helps.
I like the seat shown in the first post this thread. I think it looks a lot like the high back Cub seat. my 2 cents.
Regards,
Chris
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Casbohm Maple and Honey
www.mapleandhoney.com
Cubs: 147
R and the "train", 127 elec lift, 127, 125, 106, 102, 100, 86, 73, Brinly plow, Snow thrower, 2 Rototillers, several mower decks and several snow plows, #1 cart, Grandkids barrel cart.