The supplied tailpiece is a good copy of the original why change it?
If the action is not to your liking, get your guitar shop to check the neck relief and adjust the truss rod if required (most of these guitars need setting up when they come off of the boat !) if the neck is ok you can jack up the bridge (no need to change it!)
The supplied tuners work fine, they do the job but don't look "right"
To make your guitar look as original as possible these need changing--but my friend found the hole centres are just slightly different to the originals and copy replacements!!(if you are going to buy some, find out the exact metric centre measurement of the holes on your headstock and the centre distances on the poles of the set you have chosen)
a fractional adjustment may have to be made (how are you with a drill!!?)
OK get a luthiers advice!
check out the sites below for the hardware, i think the DR range is better than the SB, but the Millers i think are cheaper.
http://127.0.0.1:4664/redir?url=http%3A ... ktCk4-cfUA