I didn't change my brake line either, even when I upgraded to a radial M/C.
The new calipers come with pads and its a bolt-on change.
Black:
https://www.ebay.com/itm/BRAND-NEW-B...EH3:rk:91:pf:0
Red:
https://www.ebay.com/itm/BRAND-NEW-B...ugK:rk:92:pf:0

The master cylinder is a bolt on swap as well. Either Any '08-up Buell (or EBR), or any 19mm radial M/C for 7/8" bars. Make sure it comes with it's own lever if you go radial.