If want a Peavy/Oswalt/Carpenter/et al. you'll need to give equal talent in return, and that's why I didn't make a suggestion. B/c you'd have to trade Crawford or Konerko. I don't think a package of marginal talent will cut it either (like Dye and Bedard). So, I see two options:
1) See if someone is high on Willis and take advantage of him/her.
2) Trade Konerko. 1B is very deep, much deeper than any other position, so you should be able to find someone to get you 20hr/80rbi/.280. If nothing else, you have Morneau.
3) Trade Jeter.
#1 probably won't happen. So . . .
If you do #2, your power is pretty much screwed though. You'll have to focus on runs, sb, AVG and win those categories for your offense to hold up in h2h.
If you do #3, you lose a good buffer for your AVG and 100+ runs, and probably 15hr/85rbi/15sb. But at least Barmes is decent. The drop-off b/w Jeter and Barmes isn't as great as the drop-off b/w Konerko and John Doe.