So I was going to order 3 inch drop spring up front and Djm Flip kit in the rear rear. Now can I leave my stock shocks or do i have to change them? If so what size do i need and who makes a decent set of drop shocks?

 

You can use stock front shocks at 3" no problem
Rears will have to be changed. Belltech street performance are what I'd run, they're pricey but worth it IMO.

 

Belltechs are good and you will also prolly need shock relocaters for the back

 

Go ahead and plan to notch

 

The flip kit comes with the c notches

 

There is no way I would run a DJM notch, plenty of issues with them ******* up on gmfs

 

True story..

 

So which flip kit should I use than?

 

MCG or BT imo

I am running BT because I got a bad *** deal from a vendor on CGM, but that or MCG would be fine, and the flip kit from DJM is probably nothing bad, but their notches have horror stories of failure. Search on GMFS, don't think it has been talked much on CGM, but I bet it has been here too.