gtr's are completely different to the 25's krishy...your making it sound worse than what it is.
Replace the hose. Fill with coolant and bleed all air out of the cooling system and run with heater on while topping up coolant in radiator. Once at normal operating temp...put cap on, take for spin around the block and see how she runs. Dont thrash it. Load it up a little bit, then check coolant after it's cooled down. Dont rip cap off straight after you've returned from your drive as you may get burned.