Placed the subframe on my rollers and rolled the subframe back under the shell:

Then raised the jack stands and placed it back on the jack stands:Dug out my 2 floor jacks to lift it up and increase the jack stand height as I go:
I may get a second set of hands to help me adjust the subframe to the mounting holes. Going to give it some thought on the best way to wiggle it in place once it is higher up close to the mounting holes.  I may place a 2×4 across each jack stand so the subframe can slide as I adjust things.  One on the front and one on the back.  Might be tomorrow’s task if I can get a second pair of hands to assist.