Manufacturer: Howe Racing Enterprises. Howe knows racing. Since being founded in 1971 they have used real world racing experience to develop a huge number of parts all specifically for racing. Pitman Arm - 4.50 in Long - 1.500 in Offset - 1.500 in/ft Taper - 1-1/8 x 32 Spline - Billet Steel - GM B-Body 1977-96 - Each.