Harman Direct Positive Paper?
Or if you are adventurous. B&W reversal process your paper as well.
Dektol first developer, K2Cr2O7 bleach and NaS clearing bath, wash with white room lights on and then normal B&W process again.
But +1 for Harmon DPP. Much better black and while tonal range than can be achieved with reversal processing regular paper, and a heap faster/easier to process.