911 shocks vs. 914 shocks, The shocks are not the same Options

[willieg]

I did the usual 5 lug conversion, buying 911 struts, with shocks, from a 911 guy who said the struts and shocks were from a 911 T. I changed nothing but the struts and shocks. The ride was harsher than I wanted so I figured I would take the 914 shocks out of the 914 struts and put the 914 shocks in the 911 struts. The 914 shocks, on the right, do not fit in the 911 struts. The 911 shocks are on the left. As you can see, the ends of the shocks is different. What is wrong with this picture? Any idea about the origin of the yellow shock?

[Olympic 914]

I have Boge 911 struts that I was running Bilstien inserts.
The bottom looked the same as the insert on the right.
I replaced them with Koni adjustable inserts that look like the one on the left.

It should be marked on the insert the brand. Both my Bilstien and Koni are yellow.

Why didn't they fit? Too long, or too short?

It looks like there is a little piece on top of the left insert, the Koni adjustable have that. See if it turns. Maybe you can change the setting.