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for example summit has the 9748 wires for like 130 and advanced auto has the 748 for 88 bucks. both good companies i just didnt knwo if there was a difference b4 i buy them
I'm not sure about 9748 but I do know 748 is a good Delco number for our cars and probably the stock replacement. Summit is famous for confusing matters on the LT1. They are very much geared to the "F" body crowd (Camaro, Firebird). To them them LT1 means it fits all bodies which is not always the case. Whatever you get, be sure at the opti end there are 4 wires with right angle connectors and 4 straight. Many sets will have 8 straight. No way will that install at the opti end.
 
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