Frank vs. Bo
I've been thinking about the distinction between a FrankenKirby (or other brand) and a bojack machine and to my mind it comes down to the use of OEM vs. third party generic components. If you're redoing a machine with genuine OEM parts (i.e., original brand parts for or from other models from the same manufacturer) it's a FrankenKirby or Frankenwhatever. If it has generic, third party, generally inferior quality parts, then it's bojack.
Just my $0.02, feel free to disagree.