This is a really good book for getting all the hp you can.

Engine Management: Advanced Tuning

This one will help you build or design a system.

Maximum Boost: Designing, Testing, and Installing Turbocharger Systems (Engineering and Performance)

This is a good tool for checking hot spots under the hood and engine.Also check track temps and tires

Raytek Mini Temp Non-Contact Thermometer, -20 to 932F Range - MT6

Few other things

Eibach 2059140 Pro-Kit Lowering Suspension Coil Spring

EBC Brake DP2689 Front Premium Organic Pads

Brembo 35584 Rear Crossed Drilled Rotor