Picked up a Suburban.....questions about rear flip kit

[spudz]

I just picked up a 91 suburban. I want to static lower it, flip kit in rear, springs and spindles up front. My question is, do I need a c-notch in the rear? I cant find any kits specifically for suburbans from any of the big names. I know I can use regular c10 stuff in the front and I assume c10 flip kit will work in the rear. But will I need a c notch? I know a c10 c notch wont work. Does anybody make a bolt in c notch for a suburban??? I have a dozen square bodies and have had a ton of them but this is my first burb. Ive searched here and google with very little to go by. Ive found suburbans that have had a flip kit done so I know its possible.