To converted LHD to RHD, things that need to be done are - steering rack - Clutch/Brake/Accelerator Pedals - Master Cylinder - Brake Pipes - UK Dash - Some Wiring + all the holes that need to be cut out and welded up, IMHO by the time you have done the conversion to VOSA standards its probably going to be cheaper to buy a RHD car + you might have to pay a premium to an insurance company as its not how it left the factory so would be classed as Modified?