You've selected the flat pitman arm reamed to a GM drag link at 6-3/4" from center of spline hole to center of tapered hole.

This is a flat FORGED pitman arm (no drop).  It comes tapered from the bottom up for a GM drag link end (example part numbers:  ES2026R or ES2027L) at 6-3/4".  Typically used with a 7.5" dual steering arm (center of ball joint to drag link hole) for lock to lock steering. 

Made to fit a Saginaw 32 spline power box spline (no master/key way splines) which allows you to adjust steering wheel center as needed (no need to file the flats because it doesn't have any).

• Overall length (tip to tip):  8-3/4"
• Drop:  none
• Center to center length (sector shaft to drag link hole):  6-3/4" C-C for GM drag link taper
• Sector shaft hole:  32 spline Saginaw power steering
• Sector Shaft Splines (Small 1.18", Large 1.22")
• Drag link hole:  GM drag link taperr (fits:  ES2026R or ES2027L)
• Drag Link End Tapered Hole (Small End .697")

CA Residents: Prop 65 Warning