Weigh your pork chops in grams. Yes, you need a scale for this recipe because I have no idea how heavy or thick or large your chops are. Once you have your weight, measure out 1.25% of that weight in grams of sea salt, or kosher salt. Now measure out 0.25% - that's one-quarter of one percent - in curing salt if using. If you are not using curing salt, sub in more regular salt.
Mix the salts and the sugar, if using, together and massage that into the pork. Ideally, you then vacuum seal the pork. If you don't have a vacuum sealer, put the pork chops in heavy freezer bags. Set them in the fridge to cure. You will need to cure these chops for a minimum of 2 days, and for chops as thick as mine, up to a week. Don't worry, this method of salting them prevents the pork from every getting too salty. You can leave the chops in there for 10 days if you wanted.
When you are ready, get the smoker going. Any wood you like works, but I prefer apple or cherry. Rinse the pork chops in cold water and pat dry. You want them still damp.
Smoke at 200F for at least 4 hours. You want them to be fully cooked inside, about 150F to 160F. Serve hot or cold.