Ok thank you, I'll make sure to do them since I plan to rev high with the cjFrom everything I've been told and read about they can fail in a n/a car as well. It's more to do with the revving than it is power. The stock one's aren't so good at handling vibration. Cheap insurance and the install is a bit time consuming but it's really not bad. Blazer707 did a install thread that takes you through the whole thing very well.
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