Performance Drop in Strut/Lowering Spring Combo Vehicle:2004+ Grand Prix but they are not required

but they are not required when using this product

Included with Every TiAL BOV:

First we drill out the factory m6 holes so the LSJ intake m8 bolts will fit

We have not confirmed this

This is where a stiffer/larger sway bar setup becomes beneficial

Performance Drop in Strut/Lowering Spring Combo Vehicle:2004+ Grand Prix but they are not required*Does not fit V8 W body vehicles This is a complete drop in replacement suspension for your W body. This will lower the car about 2" in the front and 1 1 2" in the rear compared to new OEM components. Includes: (4) KYB GR2 Struts (4) ZZP Coil springs (4) New strut boots (4) New Rubber isolators (spring pads) (4) New top plates (4) Top plate "anti pogo" washers Since the car is lowered, we highly recommend our shorter dog bones (ZZP Billet or Standard)