unfortunately i do not have the ready made adapter for kelisa. you can get the 4" K&N RC-3600 for RM190.00 but you may have to customize the adapter yourself.
After some thinking, i tot of changing my car piston. I'm using evo 1 engine now. Stock piston with big turbo setup. I'm afraid it might not last long.
My mech said use 1J or Fairlady piston, rebore...