When I measure like Erhenbergs pic from the spindle centerline to the top, I get more like 4 3/4" to 5". That might just be me though. Man I wish the casting numbers were legible.
That's because yours are "taller" being 73 and up "B" body spindles.
Ehrenbergs picture is for 73-76 A body spindles, or 70-74 E body spindles, or 70-72 B body spindles.