Unfortunately my car came with KYB’S in the rear, are the springs perched on them probably my stock springs? Or do they use different ones? Thanks for the help in advance

Stock springs fit the KYB shocks.
But any aftermarket springs that fit stock rear shocks also fit KYB.

So the fact they are KYB doesn't answer your question.

KYBs are cheap, often bought because they are cheap, so good chance the PO was also too cheap to replace the springs.

Jim

My car was also purchased with KYB's and the springs are redish orange in color. I assumed that they came with the shocks and were KYB branded. I searched for info on them in hopes of knowing what poundage they were but had no luck. I have since upgraded to Koni yellows and reinstalled the springs.

Are your springs red?