It will be reccomended but not as a reliable motor. I was thinking of doing something of the sort, but then figured the reliability issues. Do not listen to what people say, they are not reliable, I've known people who've had it built proffesionally and 30k miles later..kaboom.
If your looking for a strictly track vehicle, its a good motor, any other purpose and its like a dodge caravan transmission...worthless.
I personnally think you should just throw the b20 in and be happy. Or a turbo ls. If you want all motor GSR.