I bought a car...guy lost the title to it, but he had a DA shell with a title, swapped the vins and everything was good...lol. I didn't know til I noticed the firewall and the doorjam/dash vin number is different. Got pulled over in the car many times, the cop checked it out (he said a car was stolen in the area with the same description, owning a honda FTL lol.) and he checked the dash and doorjam, they matched the title/registration, and it was all good.

If you're trying to do it the cheapest way....buy a totaled rsx shell (MAKE SURE it's not reported) and do the vin swap, or buy a good rsx shell and swap the vins.