You are correct about the 2.9L/2.9L Crusher. The standard version does not come with any part of the induction system, the Crusher comes complete. With the standard version, you will also need a single blade throttle body if you do not already have one.
For the fuel system, go with 80 lb injectors, but maybe just go with the 850 rwhp fuel system to save a few bucks. If you wish to upgrade to the 1200 rwhp system, you are just a set of the 400 lph pumps away, that's the only difference between the two systems.
For a heat exchanger, Afco is the way to go. We have several versions available, with and without fans, to suit your needs and/or budget.
Hope that helps, let us know if you have any other questions.