LocostUSA.com

Here is a source of unusual header components. Items you can find here: Flat four and flat 3 collectors as well as traditional round collectors for 4 and 3 tube headers.

http://www.coneeng.com/collectors.html

Also, Speedway Motors is a very good source of mandrel bent tubing. Very high quality and low prices.

Bill

Great link. For the time required to build a collector and the cost of a couple of j-bends, their prices seem pretty reasonable.

Great find. Their prices on header kits are really reasonable. I had done some rough estimate with some other sources and came up with prices at least $50 more without a collector. I think that is who I will be using.

You might also consider Columbia River Mandrel Bending.

http://www.mandrel-bends.com/catalog/

They have for example both 2.25" and 4.5" radius bends in 1.5" tubing to allow the pipes to "nest" for a better look. Prices also seem reasonable. The 1.5" tubing is 16 gauge better than 18 gauge IMO. Possibly use both companies to achieve the best result.

JMR