Freestyle now has a replacement for Ortho Litho back in stock. To amend my previous post, for high
contrast alt work, FP4 would make a nice interpositive, but might not build the higher gamma you
want in the final. But unlike TMax, is available in ULF sizes, albeit relatively expensively. Since I mostly work with sheet film, I make the interpositive by contact in a registered mask exposure frame.
Smaller film can be done this way too, simply by taping to a larger registration strip, or else enlarged
onto the interpositive film.