Make sure you tell them EVERYTHING. Are you using custom camshafts too? Make sure you know what kind of ignition you'll need. That's another complication I forsee. Just as you'd need a certain amount of fuel at certain RPM's, you will also need the correct spark at each setting. That's why I think this is going to require much more effort than you anticipated. YOU will have to do all of the research, unlike cars w/ turbo kits readily available (where the hard work has already been done). I wish I could help more with this, but I really have NO knowledge of anything this involved. I think you're going to end up needing the help of a shop that's used to full engine reprogramming and dyno tuning.