Worth pulling /6 to "freshen up"?

It depends on how "fresh" you want your freshen up to be. What are you goals with the car, and how will you drive it? What year and model are you working on? Freshening can be no more than you anticipated, or a complete tear-down to check for bearings and clearances.

A good first step is do a compression check. If it's good, a cam change can help things out. Oregon Cam is local and can regrind your cam for about $80 or so. If you have more ambition and deeper pockets, figuring out your compression ratio will tell you if milling and/or porting the head is worth a shot. These engines are notoriously low-compression and don't breathe all that well from the factory. Fixing both of these can make a noticeable difference.