I don't think it's that easy to retrofit a kickstarter to the aircolled Suzuki singles?
I had a DR600, you needed to remove the top end & split the crankcases to remove/replace the kickstart shaft unlike later bikes such as the DRZ400 where you only need to remove the complete clutch basket & primary drive to do so.
I could be wrong though, check with your Suzuki dealer. If so, you'll need to factor in the cost of a complete gasket set plus the labour if not doing the work yourself in addition to the cost of the kickstart kit itself (£130-£150 for a DRZ, the cost of a kickstart shaft alone for my DR600 was in excess of £80 15 years ago.......). If you do strip the engine down, ensure that you check the output countershaft for wear while you're in there. If that fails at a later date, you'll have to repeat all of the work to replace that - DAMHIK