Guys do run 12 row 30" corn heads on **88 machines, but you're pushing the limits of what the machine wants to do. You'll need the third lift cylinder, if you don't have it already. You will also need a lot of weight on the rear end to hold it down. We had to add several hundred pounds to the back end on a 2388 to pick up an 8 row corn head. The 2200 series are heavier than than the old 1000 series.
-Lance