Mine has Isky red zone bushed offset lifters, Trend 7/16"x .165" tapered pushrods, T&D 1.7 paired rockers. Pac 1224 springs and matching retainers. It hurt the bushing in one lifter early. Isky repaired it at N/C. Close to 350 passes now with no issues. T&D's were purchased used with ? passes before I bought them. 3 shafts were brinelled on the exhaust side after aprox 400 passes. Added 3 new shafts and all bearings as maintenance. No issues close to 600 passes. Swapped springs at 200 passes. The old set pressure was the same as when they were installed. Pushrods were purchased used, no issue ever. lash seldom moves, maybe 2 rockers.001" at checks. All told the system works great. Cam is Comp with RX1718 intake lobe, XCX 1862 exh lobe.
Doug