typically the kits come with them or the hellion uses the stock manifolds because they hold in a lot of heat, which helps with turbo spool and have proven to work very well compared to kits with headers.
alright thought i couldnt go wrong with a set of frpp shorties...i bought my car with kooks longtubes on it so its something i knew i would have to purchase if not included in a kit
Well some good quality shorties like frpp would work great. Some kits bolt to the stock headers them head to the front. So by using a quality aftermarket header would decrease lag, let the turbo come into boost sooner.
Or you can face them foward and hav the shop route them together to a turbo.