270/280 kw's is almost double the output from the factory, Does it double the fun. Bet your life it does.
I watched my bud (Lazy bastard) develop his 33 to those levels with all the right supporting mods, suspension etc While I went on trying to build a monster.
I envied the fun he had in that car, It went like shit off a shovel, Could hand out pain to most things it ever came up against and was as reliable as a swiss watch. His world came crashing down when He decided to go all out, the ensuing pain that only those of us who have done it can understand was enough to have him part out the car and move on to an Evo but still wishing he never touched what was a dynamite combo.
I have my 33 which is now beyond being a street car so I am developing a 33 gtr using his gtst as a blueprint. Safe reliable power and a shit load of fun.
Will you lose money, Of course you will! Will it be worth it, If your asking me, Darn straight it will be.