Here is information from a post I made in March of 2001 regarding using paper developers to get enlarged grain when processing film:(posted 8327 days ago)What follows is information on developing Tri-X Pan in various paper developers. The information is from an article entitled "DADA Developments" in the September 1983 PHOTOGraphic, by Frank Peeters.
Rate Tri-X at 1600 and develop for 8 minutes in Agfa Neutol at 68 degrees. The author makes a stock solution of Neutol by diluting it 1:8, per the manufacturer's instructions, then he further dilutes this 1:2 to make his working solution.
He also says you can rate Tri-X at 1600 and develop in Ilford Multigrade paper developer (1:29) for 7 minutes at 68 degrees. He says it works with Dektol and Selectol, but doesn't give times.
He suggests running tests at 400, 800 and 1600. Some of his best shots in daylight were done with a red filter.