I read this thread some time ago, in particular post #25 where bulitt added the spacers to extend the offset of his seat for the 46 BH. http://www.greentractortalk.com/foums/medium-frame-compact-utility-tractors-mcut/111113-2520-mods-3.html#post1903810
Using his link I bought the spacers he used, after delivery they sat in my shop to season properly for 3 months or so
Recently I measured how long new bolts needed to be and found them and cleaned primed and painted the extensions a nice black to match the BH frame. I installed everything tonight and while I can’t sit in it to try it, I can definitely say I like it!
Side note-anyone else considering this mod-I have 6 extra 4.5” grade 5 black oxide coated carriage bolts -you pay the shipping!