Killer B Motorsport can upgrade your current Holy Header (HH4-1) to an EWG setup.
Simply purchase this service, and ship both your uppipe and manifold to Killer B Motorsport with your order number. Our trained welders will add the EWG to your uppipe while bolted to your header. This process ensures a leak free fit.
Turn around time is approxiamtely 5-6 days. A new Killer B Dump Tube is also included with your purchase.