Started fabricating the actual support for the bumper, radiators, and accumulator:
I'll be running tubing from this front support structure around the radiator for lower supports; haven't quite sorted upper rad support yet but I don't think it'll be much trouble compared to this part. I will use the bottom of this structure as the main attachment point for the splitter.
Also sorted out what was causing my issues with the TIG torch (me) so the welding is going much more smoothly than the last few times I've attempted to make multiple pieces of metal into a single piece.