Parts & Accessories Spare parts Specifications and features of Toyota Land Cruiser 1FZ headers, cut. American Racing: Made of 304 stainless steel and full laser welding. Long tube 1/7/8 collector with 3-inch downpipe. Its lengths are coordinated and there is an internal triangle for high airflow, which increases engine performance and horsepower. Compatible with Toyota Land Cruiser 1FZ 4500. Hyperflow Company Comes with two mufflers, one Yukon and the other electronic, without their accessories. For sale to the highest bidder