I have used Accel u-groove Plugs(276S) and MSD Wires for over 20yrs.From my drag car to my motorcycle and now in are Streetstock and they have never let us down.I index them but never nip them.We are still on the fence about running this year,Just to many things going on.Good luck at I-88.I Heard Matt Roberts is going to run for Perry this Year.Again Good Luck.Dave Sr 01A