My son has a 2005 (?) Kona Manomano full susp. with a Manitou SX-R fork. The fork is working fine, but he's looking for something a little more aggresive to handle some bigger drops, jumps etc. We live in the Vancouver area, so his riding encompasses everything from XC to North Shore. He's 11 years old, and weighs about 80 lb.

Does anyone have any suggestions? Either new or something used on eBay. His current set up is a conventional axle, and I'd rather not have to go to a 20mm if possible.