nitrous express

a friend of mine wants to sell me his ne wet kit, heres a link to it,

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he didnt add jets but the guy that bought it off of him bought two jets, a 35 and a 50, and hes asking 400, he never used it too, is it worth it giv me some info, right now im runnin a cta intake, obx header, hotshots 2.5" catback msd coil, fr wires, and mobile 1 full synthetic, i also have sct which is waiting to be installed