Crazy request...

The end of the dipstick dips into the sump so if you pull the dipstick out and held it up to about where the sump starts and look and see where it ends up on that tube ...it might give you a real good idea if you have the wrong tube.. As for different tubes, probably for truck oil pans or something like that where the sump is further back or forword making the dip stick longer or shorter...etc..

Talk to text jacked my reply real good.