NA is IMO best in stock form. If your plans are to never mod anything on the car, and wish to maintain OEM reliability then an ITR motor is great. They are just incredibly over-priced & over hyped. And one thing to keep in mind is that if you are getting a "good price" then chances are it has alot more miles than your being told. Or other problems. For the $5500 a good b18c5 will cost, you could just find a GSR head, do LS-Vtec & use components of your choice. Either N/A or FI. Obviously your goal is to get more power, and $5500 for a 195HP engine is the worst for your dollar.