986 with a 3.8L GT3 Engine

[El Vikingo Tropical]

Hi I'm just starting up the build of a track car for a client.
We has just bought a cheap 2.7L 2001 model to start with and the idea is to build a competitive race car from it for a open class racing series.
It had just arrived a 2008model 997 GT3 donor car that we gone pick some parts from to start.
I have never put 997 parts in a 986 so al kind of help is welcome. As I have a company that make light weight body parts cor racing we gone substitute the mayor of the body for composite items.