Actually a set of US key caps takes care of it, plug and play. The key layout is plain jane US on a US Windows install. (Haven't tried MacOS yet.)
I replaced the spanish 2-shot number and punctuation caps with 2-shot grey caps from a US terminal board. If I had two more 1x1 size |\ keys, It'd be perfectly represented.
The numbers killed me with the parens on 8 and 9. Apparenltly I always look at keys for punctuaton.