If someone swapped a 1g MAS into a 2g car they should be shot. Not only does the 2g MAF flow I think 35-40% more air than the 1g, but the car will run rich if you swap in a 1g MAF. There is no point to swapping in a 1g MAS into a 2g.

And yes, its Evo3 16g, as long as its MHI. Is it stamped Evo3 GT?