Hello, sorry newbie style question for you...

I've stripped the tape of my 1980's road bars. I've taken the plug out of the end, measured the diameter there and it's 22, so it must be a 22.2mm handlebar ?

I want to fit two cross levers, either side of the raised clamp, so still 22.2mm - something like these :
http://store.velo-orange.com/index.p...nd-silver.html

Will it fit ( a 23.8 on a 22.2 bar ) or would I need a shim ?
If it won't fit, is these a wide range of levers at this ISO, or should I upgrade the bars and get a 25.4, 26, 31. etc...

Many thanks in advance,