help quick working on it now

[mat82284]

ok i just installed a paxton sn-89 unit and i just found out i have underdrive pulleys on my car and i was trying to add the crank pulley but it doesnt fit in the pulley how do i add this pulley??? do i need the stock one if so does ford sell them???

 

[5spd93]

you will need a stock pulley, I don't know if ford still sells them, but you could probally get 1 locally at a salvage yard cheaper.