evo flywheel cant fit into gsr..tested already..change flywheel starter problem..lol,.. call ur fren up , n tell him jinkl said "bullshit" ekekkekekeke
if its tuned, its tuned la :) no worries , no problem
for number 2, try find this user mell_amir, he might be able to help u out
but one thing, find a evo flywheel