car shakes over 45mph

[Htownsvx]

well i dont realy have a clue whats going on but i think it has something to do with the tranny but i hope not i just spent $3000 to fix the thing.

the car drive fine untill you get over 45 mph and the you can feel the hole car shake. last night i went to get some food and at like 30 or 35 mph it sounded like drive shaft or something right onder the center conscol was hitting something it was like a tapping sound but it was not a loud sound i had to turn down the radio and the heater to hear it