Mallory SprintMag with case P/N 4031017 and Paperwork fits SB BBC Stewart Warner 10K Mechanical Tach With Red Line Tattle Tail Pointer Marked Model # 424EX This Is NOS in box with directions and warranty card also NOS Drive Cable For Distributor tach drive 4:1 ratio. Buyer to pay Shipping Any questions please call Tim (508)902-8528