93PONY
Mr. Valve Events
Member # 60
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posted
TR5's are stock in 5.0's. TR55's in 93 Cobras. I use TR6's in w/my TTs & it works great. Next step up would be TR7's, etc. Whatever the factory replacement plug is, just go up 2 numbers.
NGK TR5 TR55 TR6 TR7 ......
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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