One of these days I'll have to do some porting. I'd love to have the extra hp, but right now I'm too into autocrossing and class restrictions don't allow for any porting. Eventually I'll probably move up to a class that does allow it, but then I'd need all other kinds of upgrades to keep up (bigger brakes, bigger tires/wheels, and the list goes on and on).
I hope your build works out for you. But even if it doesn't, just remember to take the knowledge you've picked up and keep going. Nothing is a total loss...
.