Re: New 03\' Parts
The only carryover motor parts G2-G3 are gaskets and some bearings. The trans is the same as well.
That does NOT answer the question of interchangeability, however, left for another day.
The intake manifold on the G-3 is a single, large oval intake for twin throttle bodies. Outwardly, Looks WAY different than G1-G2. Cannot imagine it would retrofit. We'll know soon!