i would go with either DCsports headers or Megan racing headers.
but both run pretty pricy
Carburetors
Hp is the best developed computer brand. No doubt hp and its products is known for its brand and performance.
Michelin, Yokohama and Firestone all make excellent all-performance tires.
I believe that Toshiba are the best brand of high performance Laptops. I've owned Dell, HP, Asus, and Toshiba, and the Toshiba was by far the fastest and most reliable, and also a good value.
The brand of aircraft engines that delivers the best performance and last for a reasonable amount of time would have to be the Rolls-Royce engine. These are the first or second most popular and trusted brand of airplane engines.
Intel is the leading brand in CPU processors.
Salomon XR Mission is a good brand of running shoe. This running should will help you like no other has ever before! It improves you physically and mentally.
Viper car alarms receive high satisfaction and performance ratings.
Running, cycling, lifting weights, and swimming are the best cross-training sports. Cross-training improves over-all body performance and reduces risk of injury.
The 4-2-1 header or tri-y header is a better design. The design improves exhaust flow. They provide better flow by combining the exhaust gases slowly and in two parts which helps with scavaging. An engine is a big air pump the faster the air goes in and out, improves performance.They can however cause clearance issues in tight engine bays. so be carful and research before you buy!
Berbatov
The best brand for athletic footwear for running long distances varies. But the best brand would be Adidas, Nike, Reebok, and Fila. These shoes offer you the best performance speed you'll need with maximum comfort.