There is no way i would recommend forged rods and pistons, there are plenty of rb25's out there making more than double the power of yours, without internals. With your $2000, i would get an full turbo back exhaust, and a remap at 12 psi, should make over 200rwkw safely,dont forget to have a look at the clutch whilst the engine is out. Then when you want to spend more, get the turbo highflowed, fit a set of injectors, and a front mount(up to you) run 16 psi and make 250rwkw