If you could only have one, which would it be?

1990 Integra LS - no ALB;  Brake pedal slowly goes to the floor.  After
pumping once or twice, it recovers and may or may not slowly sink to floor
again.  This only seems to occur after driving for awhile or when the car
sits after driving and the engine compartment is hot.  Doesn't ...

how to change the muffler on a 1991 Acura integra?
Can't get the bolts off the connection between the muffler and the pipe from
the cat.converter. Anyone got a photo showing the way those spring loaded
bolts come out?