New Truck with a bigger hitch...

After several years of trouble free towing our "Blue Monster" crossed the 100K Mile mark and started showing signs of age. My oldest kid also grew 3 inches in 9 months and started to out grow the back seat...

So - We've upgraded to a new truck and now I have a 2-1/2 inch hitch. My Equal-i-zer hitch is on a 2 inch shank. I either have to buy a new shank or a sleeve - thoughts and opinions on a direction?

I started out thinking I'd just get a sleeve, now I'm unsure after reading around...