Question on jetting

[Crazyblast]

I've been looking on ebay and they have a 6 Sigma jet kit for the stage 1-3. Not sure if it means I'll be getting all 3 or I contact the seller about which one. Anyways I want to get the right one for what I'm doing, im putting on a custom built high flow exhaust and a high flow intake. So ill need my jetting to be 48/180? Is this over all a good kit for the price or should I just get something else that I haven't found yet?

Thanks all.