This is the rebuild kit for the manual steering coupler. The overall length is 3.730".  The male end of this adapter has 35 splines and an indexer that mates to the steering coupler. This is the adapter piece that was needed to bridge the gap that was left from switching boxes.  I'm not sure who actually manufactured this piece, but I think it's available through Steer & Gear in Columbus, Ohio. Pitman arm, P/S to manual adapter, manual steering coupler and steering coupler rebuild kit.  The manual gear has 4 indexers and 8 splines between them on the pitman arm shaft.  The Pitman arm and coupler are used, but refurbished by Totally Auto. Totally Auto put the manual steering gear together for me and did a great job on the restoration of it. It took them three cores to rebuild this one.	I picked up the new pitman arm and it looks to be the right one!  It was the Moog #18759 piece and cost about $53.00.  I ended up removing the idler arm to repaint it the same color as the pitman arm.  I used Plast-Kote Hi-Temp Cast Iron Gray #HP-17 after stripping the old paint off and using some Bondo rust remover gel. The idler arm and pitman arm I have for the manual steering gear swap doesn't look right.  You'll see what I mean in this photo.  I went to Advance Auto Parts and picked up a manual pitman arm.