The 93 cummins is a great platform to tweek, u have the benefit of the better H1C turbo (18.5cm exhaust, and 55MM compressor side) and the better head, thats not prone to cracking. With the simple tweeks, and mods you can take the stock 160HP 1st gen to about 250HP. Thats with the full power fuel screw on the edge of runaway, the fuel pin ground down, the addition of the 3200 RPM spring, and a little more timing.