My 340 duster the headers passed below the centerlink. Your may need the same install. Maybe do some internet searching.
The problem I had was the headers hung so low that every so often they would hit things. Test results I found on the web suggested for street use some of the primary pipes could be smashed as much as 50% without much loss in performance. I had the entire drivers side crushed 25-50% with no change in fuel economy. The duster had highway gears, so 1/4 mile times were never anything to brag about with or without the crushed headers.
I pulled out to pass a slo-poke one day and there lay an unbroken cinder block right in front of me, I quickly steered to take the hit on the K-frame NOT the oil pan or poor old headers...that C-block exploded out from under the car, good size dent in the kframe but no damage to anything else. Whew...another close one.
