We reuse so many of the Cobalt pieces that if you swap donors, you'd have to rework the Goblin frame to fit those pieces.
We reuse more than just the engine and transmission so swapping to a different donor isn't as simple as just doing an engine swap. To give you an idea of what we reuse from the Cobalt, here's a list of the larger items:
- subframe
- control arms
- knuckles
- bearing hubs
- steering rack
- steering column
- pedal boxes
- brake master cylinder
- shifter assembly
- BCM and ECM (and TCM on automatic builds)
- ignition switch
- gauge panel
- fuel pump
If you don't use a Cobalt donor it'll be up to you to fit all of these pieces yourself.