#3
Tailpiece holds the ball ends of the strings. Bridge sets the length of the scale, affects intonation, and determines action.

A tailpiece wold not work as a bridge.

But you can get wraparound tailpiece/bridges that do both.
#4
Basicly, a tail peice is like a tuning machine, it holds one end of the strings. The bridge is like a nut, it lifts and seperates strings.

You COULD use a Les Paul tailpeice as a bridge, but that would A) not keep the strings a set distance appart, B) extend the scale length, throwing off the intonation or not retrofit the origional bridge.
Will says:
DON'T FEAR THE REAPER!
- SmarterChild - says:
I don't know if I can help it.

Member #6 of the "I play my guitar as high as Tom Morello does" club
#5
some gibson sg's have just a tailpiece with no brige and this works fine but most people prefer to use a brige as there is the option of extra adjustability but its a personal choice but most gits come with a "tunomatic brige" but if u like the look of just a noormal tail piece go for it.
#6
^ No, those have just a bridge. Specificly a combination bridge/tailpeice. They're not the greatest for intonation, either.
Will says:
DON'T FEAR THE REAPER!
- SmarterChild - says:
I don't know if I can help it.

Member #6 of the "I play my guitar as high as Tom Morello does" club