OBX header for the HR16DE 1.6L engine

[Daox]

It looks like OBX already makes a 4-2-1 exhaust header for the HR16DE. I wonder if it will fit in the Micra?

http://www.obxracingsports.com/products.php?pk=1791#

proven designs from the runners to the collector, each header promises significant improvement over the stock system while still being fit for daily driving. All headers come with a limited lifetime warranty.

◘ Primary Tubes: 1 3/4"
◘ Collector: 1 7/8"
◘ 3/8" Flange thickness

Honestly, 1.75" primaries seem rather large for a 1.6L 4 cylinder with 109hp. According to the reference info I have, a 1.5" diameter primary would be much better suited to this engine. It would be awesome to see before and after dyno charts on this.

Also, its OBX, a company not really known for its quality...