[JFP in PA]

Totally depends upon how much money and welding equipment you have. 2009+ engine's are all DFI, which operates at over 1K PSIG, the Boxster's fuel system is designed to work at 50 PSIG. The 2009+ engines run entirely different electronics than the 2006 Boxster, so a lot of wiring and electrical work will be required to mate the two. And when you are all done, you have a "one-off" Frankenstein car that has a ton of money tied up in it and will scare off buyers.