but it's not the same though, different pistons, different crank, different block, pretty much the only same part is the con rods & bare head casting.
Saying it's the same except the charger to me implies that all you need to do to convert a gt into a g40 is bolt a charger & bracket on, and as we know that's not the case so why lead people on to thinking that?
Get a GT, they are awesome cars. Then as you say, buy a g40 or do an engine conversion on your GT when you are a bit older and insurance wont be so insane.