PQ Series 17-4ph Stainless Steel Rocker Arm System, FORD 352-428 FE, 1.75 Ratio, OEM LR/CJ & MR/TP/Edelbrock Heads. Kit Includes 16 – Platinum Series Stainless Steel (with silicone bronze trunion bushings), Spacers, Hardened Shafts, 4 single & 4 double Billet Aluminum Stand-offs, Studs (with washers and nuts) and Ball-style Valve Lash Adjusters