The stock inner cooler does have 2 speeds. Now, you beez talkin to the pump kang. I have been out of my mind fera couple of ears, excuse ma for the temp insanity. You are in a discusion with the critter responsible for the mass production of the pump innter cooler run off of the R134A stock coolant. Have been out sum where's, so where did this go? Any where or the pricing too far off?? I saw that before I turned into the 7th man on Marzs. I found a company in Austrilia that can make these inexpensively IF you install them yourself. I found the price went from $6,000 to $18,000 real fast fer no reason. PARTS MARK UPS. Bastards. Now. Ass the years fly by. Back in 2006 or later, the Camero had the best times on the track against all autos in it's class,, ferraris, lambos ect. Because it was using 6 intercoolers to produce it's HP. Unheard of,,, still. With that many, you need GPMs, power, resivoirs,,, Ug, paddles and so ons. Not practicale, but effective.