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On my car, the plugs came out okay, and I didn't need the access holes, but the boots om the plugs were another story. Most of them stuck on the plugs and I tore three of them badly. I had to replace them with some sorta-similar boots from an aftermarket Bosch plugwire set.
After 129k miles, my original plugs were dirty, but all of them were still gapped within spec and almost identically.
I replaced my plugs with the stock NGKs from 1stSubaruParts.com.
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