I just wanted to add that oem spark plug wires are great and to recommend copper plugs.

Otherwise on the suspension, Koni yellows with ITR springs or GC coilovers are good setups. But lately, my bf and I have been checking out PIC coilovers (a new company) and they've been awesome for autocross and we have a different custom built set that we took to the Targa Newfoundland Rally in his turbocharged gsr coupe.