I picked up all my parts to do the dual master swap. The part numbers have changed from older posts so I will list them. NAPA tells me they are updating all their numbers.
NAPA Number -------- Description
G60691-0003 ---- 3/8" plug to close the now unused 3/16" port in the stock distribution block.
G60693-0303 ---- Coupling to join (2) 3/16" flared lines. (New line extension to the old rear line)
G49502-0303 ---- Adapter- 9/16" master cylinder port to 1/4" flared line
G49500-0503 ---- Adapter- 1/2" master cylinder port to 3/16" flared line
96246 ---- Dual Master (Wagner F66857)
813-5461 ---- 30" 1/4" PVF flared brake line
813-5454 ---- 30" 3/16" PVF flared brake line