a full RHD conversion isnt cheap, nor is it a quick process(it can be done in about 2 days with everything onhand.(im talkin 30 hrs, easily)
i have converted 2 hondas and a toyota, and trufthfully ill never do it again unless the pay is outstanding.
usually you need a new dash wiring harness(unless you want to rewire)(sometimes you will need a new engine harness also, i personally rewire engine harnessed... easier IMO)
dash, including dash bars(think entire new dash, some parts are interchangeable but the big stuff isnt.
gauges(some cars have only KM/H and some have MPH, it depends on the MFU.)
steering rack
brackets, sometimes a new crossmember
new brake lines, clutch lines.
some cars may have mounting points in the firewall, some dont, if it doesnt expect some plating or get a set of floormount pedals.
theres a lot more to it, but im not gonna go full into it, as im tired and cant remember everything.
now, i have heard of a few kits that look like drivers ed cars, but thats a bitch i would assume also.
RHD coversions are fairly straight forward if you know a bit about cars, but they take time and serious effort, the latter being time invested in finding parts for the conversion. if you can buy a front clip, it makes things easier.