If you are already considering an engine rebuild, or just a top-end refurb, then checking out all aspects of the cylinder-head/s may not go amiss?
More related components below that you may wish to add to your shopping cart:
Pro-workshop gasket sealant: 08C70K0234M. Easy to apply with results to professional levels of excellence.
Add as many items as you wish to the same shopping cart, new bolts to replace the old stretched items (and therefor torque down correctly) and valve guides for example, and still only pay the same single fixed price shipping cost.
This component may have other applications within the Suzuki model range, so please check the part-numbers you order are correct for your model.