That's not really for me to say to be honest. I guess it depends on your goals and budget really. I'm sticking with an N/A approach on the CG engine because a). it's not been done to this extent by anyone before and b). the project is being used as a development build to pave the way for future goals.
If you are considering an SR20 based conversion then speak to mov on here, as he will be able to give you the lowdown on what is necessary and perhaps a ballpark figure when it comes to expected costs and involvement.
