I guess it's almost a novelty at this point... bragging rights if you will. If you're looking for authenticity, there's no cheap way of doing it. These swaps are still in the 5K range. If you are however to just put in ITR parts such as cams, valve train, valves, IM, tb, valve cover, LSD, FD you will end up spending around 3k in parts and labor. At this point, it almost makes sense to sell your current motor to offset the cost of an ITR swap. From the sound of it, you'll be much happier.
I took a different route though... I went the K24/ITR head route. It just seem to make more sense since it would yield more power and definitely more economical and besides, I'm not the JDM purist type.