usually from what i’ve read, to do a conversion, you need the same front end of a similar car (ie- silvia to convert a 240sx) and it is a complete pain in the ass. you need to drill out all the spot welds in both firewalls, weld the rhd, or in this case, LHD one in. possibly swap out the steering linkage, etc, etc, all in all, from what i’ve read, it takes about 40-60 hours to do.