I loved my GTI-R they are temperamental but no more than a GTR. They are OLD so like any old performance car anything that has not been replaced or rebuilt could die if pushed but having said that the engine is awesome, way over engineered (like a GTR). The engine is almost completely different to any other sr20det, solid lifters, quad throttles, different cams. I’m pretty sure even the rods and crank are beefier. The gearbox is strong but requires a bit of mechanical sympathy, there is a theory that most breakages are because the hardening wears of the teeth of the gears? Uprated gearsets are a $5k exercise. Handling out of the box is crap but can easily be corrected, around town they are unreal. They are stable at high speeds but noisy as and the doors try to peel them selves off at really high speeds. The looks are a bit love it or hate it but a good set of 16’s or 17’s are a must and chrome is a no no (but each to their own). Brakes are no good for track work but good rotors and pads are fine for the street. Filter, exhaust, heat range 7 platinum plugs and 1.1bar of boost saw 194kw atw at AVO which was enough for plenty of fun.
You must get a good one or you are looking at a world of pain. They aren’t cheap but very worth while, I still wish I had never sold mine.