I just did a B series auto to manual swap not too long ago. You'll need the tranny, clutch, flywheel, clutch fluid reservoir, hard lines, pedal assembly, shift linkage, shifter, manual tranny ECU, and I know I'm forgetting something else. You'll also need a tranny mount. I believe there is an issue with the location of the tranny mount point between the auto and manual cars. I know there is in an EG, but I'm not 100% sure with an Integra. If this is the case, then a custom mount will have to be made, or the mounting point will have to be relocated. In the swap I did, we just cut the mounting point off, corrected it's size, and welded it on in the correct location.