turbo upgrade

Update-------------------------3-10-2015 The Blue MSP was completely Parted out. But now my Spicy orange MSP decided to throw a rod...... On stock boost! Must have been weakened by the 20k miles with the GT2871rs. She has had a rough life. When I bought her back in 2011, she had some pretty...

So ive just bought a 1992 GTR Familia, but unfortunately the turbo bearings are shot. What is the best turbo upgrade i can replace it with and will aftermarket GTX manifolds bolt on and be in the same place? Cheers