I went different route with my 3.0 to 3.2 conversion. I call it the the 3.2LS.
I swapped my 3.0 crank and rods for that of a 3.2, I used my (still good)3.0 cylinders with some JE pistons with a 9.3 CR, 964 cams etc.
I have yet to run it. It's waiting for the next project :-)