Tach:
Check that there is 1.0-1.5V at the MSD tach output. If not, the MSD is defective – even if the car runs OK. If the MSD is OK, we'll replace the tach.
Brakes:
Remove the brake master cover.
Have someone push the brake pedal while you watch the motion of the brake balance bar. Which master cylinder is absorbing all the stroke? Are the rods (and especially the cylinder pistons) returning all the way?
The bleeders are at the top of the calipers?
If you have Wilwood or Sierra calipers, are you bleeding both inner and outer pistons?