Fits 88-95 Chevy/GMC trucks & SUVs 2WD/4WD with 5.0L/5.7L305/350 cu. Shorty design for power gain from idle to mid-range RPM. OE style ball socket collector connects to factory exhaust head pipe. Fully mandrel bent tubes made of 16-gauge mild steel. Head flanges laser-cut from 3/8-inch thick steel plates. Flanges flattened by hydraulic press for precise and leak-free seal. All joints TIG welded for resistance against cracking and wearing. Black paint coating that withstands up to 500 degrees Celsius. Does NOT fit Vortec engines. Note: The items you received are shown in the figure. If you have any questions later, please contact the after-sales staff in time.