Foma do a kit which one of the larger US photo distributors may carry.

Otherwise it's not too hard to find a "how to" online. googling for "B&W reversal development" got me all the results I needed to get started.

Ilford's site carries a PDF about reversal, and though it specifically names their own developers in it, I followed it to the letter just the other night, changing only the developers for what I had to hand and got excellent results (for a first try) using Lucky film.