2k1 stock LCD. The Bonebrake sticker is most likely just a sticker. As was said, the Bonebrake mods mostly just consisted of porting and polishing reg pistons anyway.
You can still get battery replacements and sometimes find stock boards, but doing the PMR board mod is very convenient and gives you more modern firing modes so you can comply with tournament and field ramping rules (if you want/need to). You do lose the LCD screen though, if that's important to you.
For parts and service, www.fixmyangel.com
is the place to go. If you can't find what you need there, www.pbsports.com
also carries a lot of older Angel parts (though most of their stuff seems to be for the A4 and up).