You might do a search on here. Why are you wanting to add them? The stock rear rudders are ok for flying but thereís no way I could be safe landing in any adverse conditions with them. Itís hard to explain but they feel clunky and unwieldy. Thereís no Ďfeelí to them. Others may have opinions but I would highly recommend the upgraded custom ones that others on here have created. Never flown the custom ones but the geometry looks much better.
Iíve only flown a tailwheel plane with them but it was dangerous (for me) - more accomplished pilots may have a different take on them.
RV7a (converting to TW and then ready to install the engine and panel)
1946 Cessna 140 (currently flying)
1946 Piper J3 Cub (stripped for restoration)
Exempt on multiple counts - donated double because this site is worth it!