Does anyone know if the piston kit that Sandhighway offers on their website, is the performance kit or is it just the stock one.Also does anyone know the part number on the White Bros. exhaust.
No that's the stock Piston kit. The upgrade is coming but not available yet.
The pipes make a huge difference but you will need to relocate your battery to the swinger are support just behind the regulart battery tray.
Dunite