Picked these up from a friend. The plenum is not for sale it was a package deal I got from him. The pulleys are in good shape. Idk what to ask for them, I've seen them go for $99 used online. I'm thinking $75 plus shipping? Cash talks.
It's been a couple years since I installed mine but I believe you only need the provided crank bolt to get the pulley seated and then you reuse all your original hardware. I have that bolt somewhere. If not I will buy one at local hardware store and include it. I'll look up the install instructions and make sure I am right.