Does anyone know where to find the spun aluminum airhorn besides IB ???

 

Prototype racing .... http://www.prototyperacing.com/ ... search magic intake, 6" inlet 3" outlet, you can use a filter on it too. I personaly have one of these. It works good.

Turbohoses ... http://www.turbohoses.com/AirRam.htm ... they have them in 3", 3.5", 4" outlets w/ 6" inlet. You can use a filter on these too.

RS Akimoto ... http://www.summitracing.com ... search "rs akimoto velocity" these are cheap but you can not use a filter on them 2.5", 2.75", 3" outlet

Hope this helps