1. A Shinka edition is a special version of the car which only ran in 2005 and 2006. the 2005 version was limited to ~1300 vehicles and only came in black cherry. The 2006 versions were limited to 1500 vehicles and were available in cooper red, but could be ordered in other colors if the buyer wanted. The main difference in a Shinka edition hardware wise is the leather interior, leather wrapped steering wheel and parking break, heated seats, polyurethane suspension, higher powered engine, and a few other goodies. All of these could be ordered on other models but none included the "Shinka Badge" on the rear door's pillar. You always want to watch out for fakes though, people can buy Shinka badges online and tend to slap them on non Shinka vehicles to up their value. Always run the VIN# to check if it is a true Shinka.
2. No plans at this point to do a Chrysler swap. I am saving my money for a 3 or 4 Rotor someday.