Over at PTC they do high-rep UDLs, last I checked. Plenty of "fitness" there (I assume that when you say you want to be fit, you're talking about cardiovascular, maybe even specifically aerobic fitness), and it complements powerlifting. Mix that with some sled dragging, farmer's walks and tire flipping, and you'll get big, fit and strong. And, for what it's worth, leading up to my last 1RM test, I spent a lot of my off-days doing jogging, rowing and running while in a calorie deficit. PR's still happened.