If they are off a suzuki they will have a 10 digit part number like this *****-***** plus they will have a KYB part number on them in a separate location and usually only 3 digits. if you havent got a 10 digit part number separated by a dash then i dont think they would be suzuki and they might be Kawasaki. Do you know if they are gas shocks? They are not really worth rebuilding unless you do it properly and really require them for an original resto. Otherwise for a couple hundred more or maybe even less you can a decent new or used aftermarket set. Theres usually a fair few Ohlins, Works, Marzocchis etc etc on ebay for good prices. You need to ask your self whats the intended use and long term goals for the bike and if you spend a little more now it will be a benefit in the long run.