Trigger wheel setup for most makes and models of front cover: 12a , 12a turbo , S4 , S5 , JC ( Please send us a follow up email with what model front cover you have ) Why pay $450-750 for a 38 year old CAS only to find all the wiring brittle, shorted out and unable to be repaired What are the bennifits of using a trigger wheel? Perfect for NA or Forced induction Improved Stability: By directly reading the crankshaft’s position, trigger wheel setups provide a more stable and reliable timing signal compared to traditional methods like distributors, which can have timing variations due to backlash in the drive train. Enhanced Performance: Accurate timing and fuel delivery lead to improved engine performance, including better fuel economy, smoother operation, and higher power output. Included in kit •O-ringed bracket to suit your front cover •O-ringed CAS blank •Hall effect sensor and DTM connector •36-1 trigger wheel •Stainless hardware Instructions on how to install your trigger kit Used with all aftermarket ecus Nz designed and manufactured , CNC cut for accuracy Cannot be used with factory OMP Or Gilmer drive pulleys that over hang the hub please send us a email first if you are not sure Patent pending design Trade enquiries welcome