Good luck with all that (trying to find a "G" 2.5 Duratec aka SVT) - with so many going south, and less than 10,000 ever hitting the road in the first place, if you do find one it'll be $$$$$$. Heck, it might be cheaper (parts-wise) to try to find a low mileage "S" Duratec (3.0L), and certainly cheaper to find an "L" Duratec (2.5L non-SVT). Besides, the block doesn't have anything special besides the domed pistons (bumps the compression) and supposedly "hand picked" cranks. If your only problem is bottom end, and you can use all the goodies you put up top on the old engine, there is no need to find an SVT block, especially for what they cost.