Slant six dipstick length

I heard a rumor that the dipsticks are the same for the 426 Hemi and Slant Six...
I'd, like to know for sure as I need the correct one for my 225 Slant.
The tube it self is about 11.25" and the dipstick that came with the at 23.5" seems too long. When bottomed out it sticks out about exactly 2.5", meaning the correct size should be a little less than 21"...