03. The opportunity to internally balance our 360 was a result of the lightweight Scat 6.123-inch I-beam rods, and Probe flat top pistons. The Scat rods feature bushed pin bores and 7⁄16-inch ARP bolts; they are an ideal combination of value and durability. The Probe forged pistons are a big step in the right direction as compared to the dished stockers, adding compression and strength at a moderate cost. The ring pack is a 1⁄16-1⁄16-3⁄16-inch moly top file-fit set from SpeedPro, which we gapped to .016-inch for the top, and .030-inch for the second. A tapered bore ring compressor makes light work of stuffing the pistons into the bores.