I dunno... I'd say do it. But I'm not that big of a fan of Gore, either. Gore is older and much more injury prone then the rest of the guys in the trade, while Jennings is becoming a top tier 2 to low tier 1 stud WR. So, you'd give up a blossoming WR and a over the hill (injury-wise) RB for... Chris Johnson who is a stud in the making and while he's had some injuries too, he's just a much more reliable pick, in my mind, over his counterpart Gore. Then, we get to the tough part... if you think Anthony Gonzales can step in and become a legitimate WR2 with Peyton Manning then I say pull the trigger. If you have your doubts, well Jennings is a good bet for a low-tier 1 guy. Tough trade idea... if I can get your league scoring, roster req's, and stuff I can make a more educated decision though.