The red black and white wires are for the servo, the blue plastic thingy, which mechanically controls the polarity. A pansat 3500 can control a servo, don't know if any others will. Could use an old analog receiver to control polarity also, along with the actuator on the BUD (Big Useful Dish)
THe LNB may work ok. May not. Fairly high noise temp rating, and it is higher now being so many years old. May want to look into a new style LNBF where the polarity is controlled by the FTA receivers 13/18v lnb voltage .