'69 L88 427 spark plug wires
 

I have a '67 Coupe with a '69 L88 427 & iron heads. It also has 2.5" headers. Looking for recommendations on best set of spark plug wires. Thanks!

Welcome to the forum. As you may or may not know, the big blocks all came with shielded spark plug wires. That was to prevent radio interference. However, a true L-88 car came with a radio delete and I'm not sure that they used shielded wires from the factory.

The small blocks all relied on metal shielding around the spark wires, spark plugs, and distributor. I replaced my OEM wires with ones that had a spiral wire wrapped core instead of the carbon core.

As far as recommending any, I would check with some of the major aftermarket Corvette suppliers.