Alright guys I found Hamann headers that someone wants to sell for $1700 for the 4.6is and 4.8is - PART: 50 053 200




Does anyone know if the Hamann headers can plug into the STOCK Cats? or will part item 50 053 300 (Hamann SPORT HIGH-PERFORMANCE CATALYSTS ) also be needed??

The headers are $1700 from a private seller.. but the CAT's I cant find for any cheaper then $3,500!!! Ouch!! so can the HAMANN headers work with the OEM Cats?