There was no actual contact, but it is very close. I am concerned that it may torque over and make contact under full load. Honestly I wasn’t expecting much if any performance improvement. Basically I reached the point of frustration and really don’t want the hack up my car just for a header. Sounds like you have triple side drafts. If so you may want to look at the “Sport” header. I originally installed one along with the full system with no clearance issues except for the proximity to the rear SU. When I get back to Seattle next week I am going to mount the stock manifold and connect it to the rest of the system for a test drive. 72 body with 71 interior, Eibach, Illumina, R180 CLSD, 83 close ratio, 3.90 gears, Zstory, SUs, BRE Libre wheels and front spoiler.