There's places out there that will exchange your injectors for a set of
rebuilt ones. I don't recall the price but it seems like it was pretty
reasonable. Swapping injectors is easily done with basic tools and a bit
of patience. They're right out there on top.
Black transmission fluid is a very bad sign, it should be bright red.
Take a whiff, if it's black as well as smells burned, the transmission
is probably shot. Careful not to overfill it, the dipstick should have
two different sides, one for cold transmission and one for warm. Check
it with the engine idling.
Pick up a Haynes manual for the car, a 960 is a lot more complex than
the 4 cylinder cars but they're still well made and not too terribly
difficult to work on.