I own a Chinese 2004 Chang'an (also known as Chana) Kalam van made specifically for Pakistan's automobile market and, sadly, is not available anywhere else which is a hassel for aftermarket parts. It has a 798cc fuel injected 4-cylinder engine w/o A/C. It runs on both gas(petrol) and CNG(Natural gas) as selected by the driver. I want to know: 1. How to boost horsepower without an engine swap. 2. What turbo or supercharger/intercooler set up is the best choice for a 800cc engine and if turbo or supercharger's work with CNG engines. 3. Where can i get a wide-body kit (not for this specific model, I will custom fit it). I'm trying to ready it for a autoshow next year.