Awesome project, I'll definitely be following your progress with great interest! Makes me miss my old LS1 Camaro SS, that thing was a beast. I've seen quite a few LSX-powered Porsches down in FL where my parents live, if done right it will make for one HELL of a fast ride!
Which engine in the LSX family are you looking to try and get? An LS7 would be beyond wicked!