Congrats on your success.
Makes me want to get back to work on my own A3000T w/Vortex 486slc bridgeboard project. I have the Floppy Drive controller chip installed and have a Cyrix Cx486SRxsquared 25/50 1P upgrade chip that fits over the 486slc (or on other bridgeboards it fits over the 386sx chip) that I have not installed yet, and I still have to find a 387 math coprocessor for it. Hopefully it won't be difficult to find the math coprocessor.