They must mean the flange on the downpipe since the one that comes in the kit is 5 bolt. The gt35 has a t/3 flange and the manifold is t/3 so you are fine there. I would just buy a 4 bolt v-band from another ebay seller for the turbo then cut off the 5 bolt flange and have a v-band welded on that. Thats what I'm going to do and for about $50 not $150