If the lower shock mount is a pin through the shock with a bolt on either side youw ould need the adapter kit, if the lower shock mount is an "eyelet" with a 3/4" diameter bolt and nut attaching it ,then you do not require the adapter kit. There is an illustration on the product page here : https://www.ultrarvproducts.com/apk-10000-spartan-lower-shock-mounting-bracket-kit?search=%20APK-10000