Thank you for your replies , I’ve 2 ways to deal with this , I already have 10 spread shifters and bars ,hence thinking of going down this route, however it’s looking like it may be easier to buy new 8 speed shifters , it’s a old rear Derailleur so I may need to replace that if I can’t get shifters to match . It’s a old Integrated maybe 90s so a new Derailleur and matching 8 speed shifter maybe easier .