personally, i would put a RB26DETT in it, and then bolt on the accessories. If it is true relaibility, a RB26 will last longer with bigger HP than an rb25.
That being said, if you want to keep the 25, then To4z, T78-29D etc should keep you within the required power level.
Power FC, injectors, cam gears, cams, clutch, exhaust, fuel pump, intercooler....etc