You can get longer bolts. Believe they are M12-1.75 and you'll want a fully threaded one that's approx 110mm long I think.
Getting 07 and older keys will also help you out....in 08 ford lowered the torsion bar trucks approx 1.5" and they did this by clocking where the torsion bar slides into the key. putting in 98-07 keys will gain you that lost height, plus get you approx 1.5-2" of additional crankability.
Here's a link to the bolt if you wanna go that route...
http://www.fastenal.com/web/products/detail.ex?sku=0121853