Yes. It’s best to desalinate the prepared corned beef as they are very salty which is not a problem when cooked in water but if you don’t desalinate before smoking it will be inedible. Brands vary. Some as high as 1000mg/per and as low as 500mg
After desalination the meat should be dried and coated with typical pastrami spices. Black pepper, coriander, garlic powder etc.
a thin smear of mustard will help to keep the rub on.
Then on to the smoker. I like to pull it a bit sooner and finish it over steam in the oven.
2 foil pans with a rack will make this an easy task. I have some metal cloths pins that hold the top cover pan on. Assuming you have a digital thermometer in place you can monitor the temp to your preferred temp. 200f is standard. Most sites don’t mention steam but I like to do it.
smoking-meat.com has a good tutorial