i have a l reg wrx with a 16g td05 turbo on it. which as far as i no is standard.The problem is its devoloped a very noisey rattle. which means it could be on its way out, now i av been offered a sti turbo dont no much about it eg 16g .. or if its td05 4 etc etc he just sed its off a sti could i bolt this straight on or would i be looking at a remap. if so is there newere i cn get mine rebuilt or any1 out there wi a td 05 16 g turbo 4 sale thanks ............