Got a 2004 screw FX4. Want to replace all the cops summit racing has the accel coils for 200 all 8. Good brand? Any advise which ones are best bang for the buck?

 

i bought the gms coils from troyer performance. much better design than stock spring attached coils. it is an improvement over stock that you can feel. and people at troyer are very helpful. these coils are much cheaper than stock coils.

 

what kid of gains did you see?