I can order you the parts you need and you can isntall them yourself. Any 2 into 1 exhaust will provide better low end torque. As far as the air cleaner, the heavy breather and the Ness filter flow about the same. But, the HB costs $300. I can order any parts you need. Email em at DREW@DRVTWIN with year and model of yoru bike and what specifically you want and I'll get you discounted pricing. However seeing as you lvie in South Africa, shipping will not be ienxpensive.

Drew

 

Agree a good 2-1 is what you want if you want low end torque.