Many variables under the same name

Hi, I want to get variable from different class but under the same name like this:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class UpgradeItem : MonoBehaviour
 {
     public /* Some class */ item;
 
     [HideInInspector]
     public Crabs crab;
 
     void Start()
     {
         switch (itemType)
         {
             case ItemType.Suspension:
                 item = crab.suspension;
                 break;
 
             case ItemType.Wheel:
                item = crab.wheel;
                 break;
         }
     }
 
 
 }
 public enum ItemType
 {
     Suspension,
     Wheel
 }
 
 [System.Serializable]
 public class Crabs
 {
     public Suspension suspension;
     public Wheel wheel;
 }
 
 public class Wheel : MonoBehaviour {
     
     public int mass;
     public int maxLoad;
     public float roadGrip;
     public float terrainGrip;
     public float radius;
 }
 
 public class Suspension : MonoBehaviour {
     
     public int mass;
     public int maxLoad;
     public float softness;
 }

And if I choose wheel I can call

 item.roadGrip

or if I choose wheel I can call

 item.softness

Is any way to do it? Thanks for help.