I took my car up to HWR and picked it up with all the work done - HWR prefer to use an OMEX ECU, so changes to the wiring loom. They would have just done the work on the engine so that I could have kept my MBE ECU, but I did not want the hassle of sorting that out separately! As far as I know HWR only do the 200 conversion, but it is fantastic for around the £7k mark without any extras (mechanical gauges etc. I had done too!).