Well if you were to use ECULink, or DSMLink (older version of ECULink) you would see that the GM MAF translator gets you in the ball park, but the thing is crude by comparison. With everything zeroed out (supposed to look and act like stock) you would still have to make adjustments to the airflow table to get things to line up how they should.
Will it work the way your wanting to set it up? Yes it will, in fact pre turbo is better for the accuracy of the GM unit, or so I have "heard" (take that with some salt). But it still wont be perfect without well to be honest anything short of DSMLink. AFC's effect your timing table in a negative way since they lie to the computer about your airflow to get it to do what you want with fuel.
IMO if your working with a BONE STOCK car. And just looking to put a little more pep in it's step. Heres my suggestion, you'll get more with spending less money. 550cc evo injectors, 2G MAS and an AFC. I Hate AFC's and advocate a real tuning solution such as a burned chip for your mods, Link, EMS, self made tune via Ostrich or something etc. But if your not looking to spend much the AFC will do just fine with the above mentioned mods. You could likely buy all that used for the cost of a GM MAFT setup. And go a lot faster / gain more power vs just a GM MAFT change which really isn't going to do much except make it a little easier for your turbo to breath.