If you have Windsor based motor it uses a different water pump housing for the serpentine belt system because the water pump turns the opposite way. plus the v-belt systems are cheaper.Hey Guys im trying to decide what a/c system to install. I dont need a heater-just a/c. Im using a 408 stroker and can put either water pump on it and i have no pullys bought yet. I would rather get a kit with instructions rather than piece meal this. Any suggestions ? serpintine belt ? V-belt? brackets.