Hi, Just done this conversion, you need maf tube, forge tip for LCR/s3, all oil and water lines for k04 (even then they need modifying , custom dp, k04 exhaust mani, matching injectors from k04 car, its alot of trial and error really when fitting but k03s is much easier by far, ive yet to get mine mapped as i just finished putting it all together but its lookin good, hope this helps, Jack