Yeah, I made a 84p or 82p can't remember right off the top of my head. It is a lot of money but figure $200 for the d&r kit plus all the work you'll have to do on the secondary side.. The only thing you have to do with the billet case is pop a couple of holes in trim your foot rest and your done....kinda! But now that I'm thinking of it, unless your putting it in a Vert. Escape the brake caliper mounting holes are different and you'll have to buy a different caliper as well.
If you're planning on doing the 2.5" and you never have plans of putting a 3" the 2.5 will fit with smaller (7 tooth, 3.0) drivers with out doing a d&r.