I don't see why not as lomg as you don't exceed the max cog size or the total chain wrap. Both look to be CampI clones.
This may help, it has info on the cog size and wrap,
VeloBase.com - Component Listing
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk