Maybe one day there will be a setup like this for the l15
Power Enterprise Quad Charged GT-R
Sean Morris, Friday, December 26, 2008 .fullpost{display:inline;}

This lands on the realm of interesting. A quad charged GT-R. Twin Rotrex superchargers and stock twin turbos on this Power Enterprise demo GT-R.
The setup includes two Rotrex C30-94 superchargers, 650 cc injectors, an ECU, strengthened wastegate actuators , air intake, intercooler pipes, and an exhaust
The full specifications of the kit are going to be released at the TAS. I imagine this will be a fairly expensive kit. Its also interesting as belted superchargers act similar to turbochargers in their power delivery. They run about $2200 each, and are capable of supplying about 400 hp each supercharger. They would honestly be a little on the large side when used in conjunction with the factory turbochargers.