Upgrading to single setup, need some help
Im pretty new to this but have done some reading. I have an r33gtr vspec & just chasing approximately 450-500hp and dont want to touch bottom end. Do i need to upgrade my camshafts? or anything else along the way for the power im chasing. If so what is recommended that wont send me broke as i have already purchased a few items already, atm i have purchased a single turbo kit setup; (6boost manifold, 6262 precision turbo 0.84 rear, twin scroll t4 with the turbosmart prolite50mm waste gate.) Also purchased 1150cc (e85) injectors & 460LPH walbro pump.
Just purchased a timing belt kit also, with water pump inlcuded (hence why im asking about camshaft before replacing. )
Already have Power fc that was installed and tuned with old setup which was the N1 twins.
Would be greatly appreciated with all the help i can get with info.