Hi Michael, these will significantly lower the front ride height as I believe stock springs are 10 inches in length. I purchased these springs with a coil over option and at 8 inches in length, there's really not a lot of room to adjust the ride height higher. I have linked the system that I have. Further attached is a picture of my '87 944S running the 8s.
https://groundcontrolstore.com/products/coilover-conversion-kit-83-91-porsche-944-944s2-944-turbo-968-front-only