there was a goodwrench line of tools at Sam's club in the early 90's. I gave one of those mega 30 pc screwdriver set to my FIL (as a gag gift) and it is hanging on the wall still in the original package I will try to get over and look to see if it says who made it.
The ratchet, could it be made by snap-on? I only ask because my 95 'vette came with a factory tool to remove the top which is a Snap-on 1/4" ratchet in black finish (SO part numbers on it) so Snap-on did supply GM with tools, maybe they made that ratchet too...