I have the pro kit on my 91 and have a friend that has the same on his 94. IMO sportlines drop the car too low and probably have a terrible ride quality. If you stock shocks are still good the sportlines will waste them over bumps. My friends 94 has a pretty good ride quality with the pro kit and KYB shocks. All depends on how slammed you want you car to ride?
Any car I've ever ran sportlines on has bounced like a mofo...I run the pro-kits on mine and it rides great. I can't imagine how many places it would scrape with sportlines, I have to go angled at driveways and speed-bumps as it is.