Unequal length header for the GK5. This is only the upper section and would replace the first cat and you would still retain the second cat. Keeps the egr system as well.
***for off road use***
These are made to order and lead times very depending on how many orders I have in the queue.
This will cause a check engine light if you do not put a defouler on secondary o2 or if the secondary o2 sensor isn't turned off in tuning software . 
***international shipping available. contact me directly for an accurate price with shipping***