The characters in the A-Team are NOT inspired by the Athos, Aramis, Porthos and D'Artagnan from Alexandre Dumas classic novel Les Trois Mousquetaires. Nevertheless it would make a good comedy sketch to
a. have the A-Team brainstorming session and
b. show a few sample scenes if they had based the A-Team members on the Musketeers.
Obviously the best thing to do would be round up all the A-Team actors and put them into scenes from the 3 Musketeers, except with direction from the A-Team. In the event this can't be done, then a bunch of "us" dressed up as the A-Team dressed up as Musketeers driving around in a black van with a red stripe would have to do.
(Extracted from a conversation this afternoon)
 If only because they are clearly based on characters from the Robin Hood legends:
Hannibal - Robin
BA - Little John
Face - Will Scarlet
Murdoch - Friar Tuck
 Or a good impersonator in the case of George Peppard