Have found this on retro bike same block that I am using! http://www.retrobike.co.uk/forum/viewtopic.php?f=22&t=298642
Don’t know if it will work with your 8 speed DA shifters, if you are happy with your gearing and it works, I would leave alone.
If you are interested, I have some record rear hubs and a box of various blocks, will have a look to see what will fit.
Have found this on retro bike same block that I am using! http://www.retrobike.co.uk/forum/viewtopic.php?f=22&t=298642
Don’t know if it will work with your 8 speed DA shifters, if you are happy with your gearing and it works, I would leave alone.
If you are interested, I have some record rear hubs and a box of various blocks, will have a look to see what will fit.