your 500$ kit quickly turns into 2k, trust me. You need Spohn solids, new fans, you need to get everything ceramic coated because of the heat it generates, you need to cut, reweld and in some cases hammer pieces to make it work, you need to pull the header to change spark plugs, you need to reroute and get hi-temp power steering lines and all of that is just to make the hot side work. That doesnt include all the money for the cold side pieces, turbo, BOV, WG, bla bla bla. If you have alot of patience, a welder and dont mind looking at pieces going "How the **** can this work?" then sure, get the kit. I weighed the 5k for josh's kit vs ebay. I have all winter(alaskan winter = 7 months) so when **** starts to aggravate me I have the option to walk away and come back. I have probably spent close to 4k at this point including all the pieces in my sig. If you get the ebay kit, dont expect this to be a weekend job or even a month or 2.