Building system - Spawning prefab on trigger with raycast and rotating it.

I would like to know if it is possible to spawn in a prefab on the exact position of a trigger collider and rotate it to that colliders rotation.

Video

 #pragma strict
 
 var buildFoundation : boolean;
 var buildPilar : boolean;
 var buildWall : boolean;
 var buildRoof : boolean;
 
 
 var Foundation:GameObject; //assign in Object inspector
 var Pilar:GameObject;
 var Wall:GameObject;
 var Roof:GameObject;
 
 function Update () {
 var hit : RaycastHit;
 var ray : Ray = Camera.main.ViewportPointToRay (Vector3(0.5,0.5,0));
 var fwd = transform.TransformDirection (Vector3.forward);
 
 Inventory ();
 
              if (Physics.Raycast (transform.position, fwd, hit, 10)) {
                  if(hit.collider.tag == "Foundation" && Input.GetMouseButtonDown(0) && buildFoundation == true) //name the tag as you wish, unsure if it is //hit.collider.gameObject.tag
                    Instantiate(Foundation, hit.transform.position, Quaternion.Euler(0,0,0));
                    Debug.DrawLine (ray.origin, hit.point);
              }
              
                  if(hit.collider.tag == "Pilar" && Input.GetMouseButtonDown(0) && buildPilar == true)  {  //name the tag as you wish, unsure if it is //hit.collider.gameObject.tag
                    Instantiate(Pilar, hit.transform.position, Quaternion.Euler(0,0,0));
                    Debug.DrawLine (ray.origin, hit.point);
              }
              
              if(hit.collider.tag == "Wall" && Input.GetMouseButtonDown(0) && buildWall == true)  {  //name the tag as you wish, unsure if it is //hit.collider.gameObject.tag
                    Instantiate(Wall, hit.transform.position, Quaternion.Euler(0,0,0));
                    Debug.DrawLine (ray.origin, hit.point);
              } 
              
              if(hit.collider.tag == "Floor" && Input.GetMouseButtonDown(0) && buildRoof == true)  {  //name the tag as you wish, unsure if it is //hit.collider.gameObject.tag
                    Instantiate(Roof, hit.transform.position, Quaternion.Euler(0,0,0));
                    Debug.DrawLine (ray.origin, hit.point);
              }            
 }
 
 function Inventory () {
     if(Input.GetKey(KeyCode.Tab)) {
     // INVENTORY GUI CODE
     }
     
     if(Input.GetKey(KeyCode.Alpha1)) {
         buildPilar = false;
         buildFoundation = true;
     }
     
     if(Input.GetKey(KeyCode.Alpha2)) {
         buildPilar = true;
         buildRoof = false;
         buildFoundation = false;
     }
     
     if(Input.GetKey(KeyCode.Alpha3)) {
         buildWall = true;
         buildRoof = false;
         buildPilar = false;
         buildFoundation = false;
     }
     
     if(Input.GetKey(KeyCode.Alpha4)) {
         buildRoof = true;
         buildWall = false;
         buildPilar = false;
         buildFoundation = false;
     }
     
     
 }

Thanks for reading.