Ah, I love when I can answer questions like this.
The base RDT files you get are not customized to heavy mods like Injectors, Big Oil (dual HPOP), Large Single or Twin Turbos, Power Adders such as Nitrous, Propane, & Water/Meth Injection, and Modified Transmissions. Bill can write them for you, specifically, but there is a $50 charge for each one.
What some customers have opted for are the base RDT files and then one custom file from Bill -- like an 80hp or 100hp -- so that they can compare the files and see what's been changed. This certainly would keep your cost down, and it seems to be a good solution.