packaging issues. The Ford GT40 made the concept on production-based V8s famous with an elaborate arrangement of long exhaust pipes nicknamed "Bundle of Snakes". Such systems are also sometimes called "180-degree headers", referencing the 180° intervals collected in each branch, similar to a flatplane V8.

Prior to this, straight individual "stack pipes", or "zoomies", were sometimes used (e.g. BRM) to avoid the negative impact of uneven exhaust pulse interference on scavenging, at the cost of not