ok now u lost me

check out these pics ones with baileys type you have ....

this one is with a recirculating d/v

now by the stuff you said you dont have no missing pipe as you can see from the pics the bailey d/v ( top pic ) has the air pipe blocked off... and in the second pic the recirculating d/v just slots in the air pipe too so no pipe is blocked of using a recirculating d/v thats the only difference... have a close look and let me know if you have any pipes actually missing becuase a very much doubt you have becuase you would of had crazy engine codes up on the dash...
hope this sheds some light on it
