Our Safari seems perfectly matched to our 2720SL. You should be OK for everything except extended high mountain driving with your heavier 3124. We use a dealer supplied brake controller (not as good as your prodigy) but it seems to work fine. We started by not using a WDH but now use a 600 pound version which seems just right for our loading patterns. You absolutely need extension mirrors on the Safari. We use the strap on kind which are a little tricky to mount just so but work OK when you finally get them right. Best of luck from frigid Maine.
GMC Safari TV
Threaded Mode
