from everything I have read so far I have come to the conclusion that:
the stock turbo 2.4 pistons can handle up to around 400 WHP.
if you use an 01-02 block you don't have to do any grinding to get the starter to fit.
the block is compatible with the 03 up heads as well as the 95-00 heads(which I believe 95-99 have +1mm valves).
you can use earlier blocks but they don't go both ways with the heads.
you can use any TD
trans, the best ones are A568, A523. and they bolt right to the block. ( I think you have to drill holes in the flywheel for the clutch, but i am not sure as I haven't found much on that subject yet)
you will have to get custom intake manifold and turbo exhaust header.
you can use the stock ECM
as long as you get the dizzy adapter for the back of the head and a custom calibration.
you can buy custom mounts from a guy that had some laser cut specifically for Lbodys from here
he has other items that might help this along as well.
I am in the gathering stage for a 2.4 swap in my 87 charger and have done a lot of searching and I think if I get everything I need before hand I can have my vehicle down for only a week tops. with the amount of other people that have done the swap there is plenty out there to learn what works and what doesn't.