Bullet Pistons Bullet Pistons BLS1011-005-8 - GM LS F/T Piston Set w/Rings 4.005 Bore Bullet Pistons - BLS1011-005-8Piston and Ring - Forged - 4.005 in Bore - 1.5 x 1.5 x 3 mm Ring Grooves - Minus 2.70 cc - GM LS-Series - Kit
