Applications: Link G4X K20X Hondata K-Pro in 02-04 Manual ECU Note: Does not fit 05-06 RSX board OEM ECU board (Kpro) requires finishing the blind hold for the side clip. 1/8th/ 3mm drill bit Features: Two rubber grommets to pass through cables/vacuum line Round port (comes plugged) for Link USB connection or vacuum line 4 x M6 mounting holes on the base Comes with all hardware Our Billet ECU case designed around the 02-04 RSX ECU. This is primarily meant to work with the new Link G4X K20 and Hondata Kpro but may have other applications. Features 2 rubber grommets giving a simple way to have wires to connect additional io, one round port that can be used for vacuum hose or Link cable connection. Base has four M6 mounting holes to make mounting simple.