I do not have the plant plans, but I may be able to find out......
My point was that the “american jobs” rhetoric was bogus as almost all of the cars you pointed to as world beaters were manufactured outside North America (and more so for the parts).
It makes sense for the Big 3 to try and bring in vehicles designed for high gas tax markets, but it is too little too late. They had 35 years to reinvent themselves, they can’t do it suddenly between now and December.