Please tap Read More for more details of the product. For F/A/B/X-body Chevy/GM cars with 283-400 SBC V8. Shorty design for power gain from idle to mid-range RPM. Fully mandrel bent tubes made of 16-gauge mild steel. Head flanges laser-cut from 5/16-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. Shorty / Short Tube. 16 gauge (1.5mm). For track/off-road use only. No instructions provided; professional install recommended. For pre-1979 models, additional bracket may be necessary for air conditioning. Does not fit with angle plug heads or raised port heads. YOU MAY ALSO LIKE. Headers for Chevy/GM Cars. Orders will be processed within. The recipients’ signatures are required for orders greater than. Transit time is calculated by. Orders without contact numbers will be rejected by carriers and will be cancelled. Orders that do not receive payments after 7 days will be subject to unpaid item actions. Return without notice will not be accepted. If not otherwise stated, all products carry a. Against failure due to factory defects. We will only replace warrantied items. Replacement will be issued if the item is found defective. Unless otherwise stated, all of our products are. For racing and track/off-road use. No emission compliance is provided. All of our products shall be used in accordance with any applicable local regulations and restrictions on road safety and exhaust emission. No install instructions are provided. Professional install is highly recommended. We shall not be liable for any consequences due to improper use of our products.