Or NGKs. Either way, I'll check the terminals to make sure they're removable. In my defence, the AC Delco's were the cheapest, and I only needed something to get me to my parents house to adjust/troubleshoot the carbuerator with my dad this weekend. My plugs keep fouling from the engine running too lean.

Anyhow, thanks for your help everyone.

Greg

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81' 300d
73' 280c