I bought a set a while back but haven't installed them yet. The quality appears very good and they look almost identical to the originals. There have been some issues with the front bolt holes reported. Try searching this forum as others already have shared their experiences with these and other repro mufflers.
"If the women don't find you handsome, they should at least find you handy." Red Green
Likewise - Mufflers great, pipes not so great......
On this CYP77, the front pipes are covered by a protector so they don't show. For other bikes I would look for alternatives...
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F