Every 4 months wow your engine must always run like new. I use all stock toyota parts. Unless you get really epensive high performance racing wires. You can't beat the stock toyota plug wires. I've fix a lot of Celica that came to me with the engine missing. Just by taking off the new aftermarket wires and replacing them with a stock toyota set. For plugs I use the stock ND plugs for my application. They seems to work awesome. Been using them for 14 years. And have yet to see one fail.
