there are only 2 people in this world i respect from modding a GA....and those people are Wes and Mike young. they did that to prove the GA was a better engine than we all thought and find what would work and what will not..........they had money and the NPM to show their findings. they took their time and money to help all of us.
that being said i still wouldnt mod a GA but i respect their efforts, the amount of money you need to get the same horsepower out of a GA would be alot more than just modding an SR. also, last time i checked it seemed like 250/280 WHP was the threashhold of the GA engine without breaking into it.