This is the best value for a 4 corner BBK for the SC, GS and LS Platforms. These kits integrate a tremendous amount of tech and weight savings and are completely bolt-on.  They also feature an iron rear sleeve in the drum to maintain parking brake function. 

Features:

• Forged aluminum calipers for weight and unmatched strength.
• Relieved stainless pistons conduct less heat to the brake fluid.
• Fit over factory wheels, no spacers required.
• Retain parking brake functions
• Pad springs to promote pad pull back, no pad dragging.
• Internal dust seals, most bbk calipers don't even have dust seals. 

Includes:

• Front330x30mm 2pc rotors, Rear 330x24mm 2pc rotors, forged center hats, high alloyiron rotors.
• 4-pistonforged calipers, 2-piston forged calipers rear
• Stainless Brakelines
• Bolt-on caliper adapters
• Streetlow dust performance pads XT910

Fits:

• SC300
• SC400