As far as I know there probably isnt a resistor (not a capacitor) on the front speakers but I'm sure there is one in line with the tweeter. What infinity's are you getting the components? They come with a crossover already.
For the center console theres a few screws I think in the armrest compartment maybe 2-3 of them. The rest is just held in by retaining clips just yank on it eventually it pops out. I wired up a shift knob in minutes no prob.