These are PDR towing twins, HX-35/40 hybrid over BHT3B. I have had these less than a year and are in very good shape. The kit includes everything to install including ATS 3 piece pulse exhaust manifold, downpipe and air filter. Options include the coolant tube for auto trans and also 2 PDR'd wastegated exhaust housings (12cm and 14cm) for the top turbo. Full retail price for all this is over $5200. I am asking $2800. PM me for pics or more details.