You want to increase fuel delivery on a 12-valve Cummins. The catalogue PDF helps you order a 0 460 494 201 pump but upgrade to the 0 460 494 214 cam plate. The PDF’s “spare parts list” section gives you the P/N for the high-flow cam plate and delivery valves.
Many major diesel injection service shops have archived legal PDFs for customer use. bosch fuel injection pump catalogue pdf
– Go to bosch-automotive.com and search their "Parts & Service" or "Download Center" section for diesel fuel injection catalogs. You want to increase fuel delivery on a 12-valve Cummins