Trade NMS8250 2+ for NMS 8245 2+ (same specs)

I have a 512 KB, NMS 8250 with two drives, faster diskrom at 7 MHZ MSX 2+ (V9958) computer. I would like to swap it for an equally modded NMS 8245. I prefer an all-in-one system, because it takes less space.

I am not selling the machine, just a swap.