hey i was a question i might be getting an built head from jg its ported and polished and has stg2 crower cams and full crower valve springs and retainers and the valve are 1mm bigger and i might be getting it for 1000 dollars but i was going to get an GSR block wut pistons and rods should i get it. i have an ls b18b with an 60-1 t4 turbo and a ram horm manifold but i am getting and new manifold to fit the gsr head to and im using the same turbo set up but i just need so suggestions for the block...i want to make around 350whp with the set up i got so just let me know what you guys think...thank you