The carb kits are different for different models and without knowing what bike ie model carbs you have, no one could give you a meaningful response re a kit selection.
I don't need pictures of the floats.
My suggestion re the kits and or float sources would be....
http://www.mikesxs.net/
Carb Rebuild Kit - Fits: TX650A/XS650B (74-75) Contains - Slide needle Y-22
& clip, Pilot jet #42.5 BS30/96, Main Jet #130 Small round N102/221, Float
Needle assy 2.5, Air screw with spring, 7 hole choke cover gasket, Float bowl
gasket 256. Part #48-1919
For your floats......
Brass Carb Float - Fits: 1970-79 XS/TX650 Stock 38mm. Mikuni CV Carbs.
Oem Ref.# 256-14985-00 Part #20-6500
Best of luck, Blue