I did mine 4 years ago and have 20k miles on the original no extra clearance vac rod bearings and arp bolts. I've done oci every oc since as well as checking the oil filter for flakes. No issues to date.
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Harrop Supercharger, BPM Tune, K/W Coil over kit, Stoptek BBK, Magnaflow exhaust, ear to ear grin everytime I drive...
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