I was thinking the same thing. If the mods add air, then I'd think that fueling should be checked too.If the port job significantly improves airflow, tuning should be considered. Some TBs will bolt on and work fine, while others may require some tuning.
Are you planning to run a smaller pulley? I am not sure I've seen a ported/stock pulley'd blower in action. I think a pulley would optimize the porting results, and at that point a tune is a necessity.
Just my opinion though!