To do the hex conversion you need...
#9880 steering block -
http://www.teamassociated.com/parts/details/9880/
#7496 axle -
http://www.teamassociated.com/parts/details/7496/
And either the AE #7497 plastic hex adapters or the JConcepts ones i use...
Front #2135 -
http://www.jconcepts.net/store/index...roducts_id=538
Rear #2091 -
http://www.jconcepts.net/store/index...roducts_id=524
Then some 8/32" wheel nuts for the front, these are the ones I use...
http://www.jconcepts.net/store/index...roducts_id=441, blue of course