quick ? on spider gears

i am putting in 4.56's in a week but the ones i got for the front dana 30 didnt have spider gears, can i use the factory spider gears on a 3.55 carrier and lower on a bigger carrier for 3.73 and higher. and i if i cant where type of shop would i get spider gears for cheap?
thanks

yup you can use them spider gears are spider gears no matter what the ratio.
DIG IT!