Unfortunately, a 4164 kit is 'rather late' for
the IBM-PC. Now, if it
were a kit of nine 4116 chips for the original IBM PC1, it would be more
impressive. (the first generation IBM PC motherboard had four rows of
16K DRAM chips with just the first row of nine soldered in, for a total
of 64K on the motherboard- any additional memory had to be on the I/O
channel.) I USED to have two of those first generation motherboards.
Yet another regret is that I don't have them anymore.
Those are still cheap on ebay.