The MAYASAF Assembly for my 2003 to 2006 Expedition has exceeded my expectations in terms of performance. Thanks to my knowledge gained in practice I have been able to seamlessly install the Assembly without any issues. The Automotive-grade materials used in its construction means that it is highly durable and resistant to wear and tear.The only issue i faced was the assembly instructions, which I found slightly confusing. However, once I deciphered them, the installation process was simple. Overall, I highly recommend this Assembly for anyone looking for a high-performance upgrade for their Expedition or Navigator..