Will the following parts off a '99 Silverado fit on a '00?
5/7 drop
-DJM
-whole kit, includes upper and lower control arms, air bags, shackles,
shocks, etc.

They should, since there wasn't much change in the body style and running gear from 99 - 02. Unless the 99 happened to be the older body style, otherwise I'd say give it a try.

Thanks for your reply.

should work. i think the frames were changed in 03 but the 99-02 were the same