You really need to define lip, valance, and spoiler…
All early model US cars came with the sameish front valance. 87 IS cars came with the cow catcher front spoiler installed in front of the valance with a bracket that is NLA. Non is cars in 87 are 4 door and got several different lips added to the early valance. All late model cars came with the same front valance, and there was the i lip the is lip. Any early model car can run a late model valance per the new rules since in 88 we got the diving board bumpers with the late model valance.
Good condition early is front spoilers are getting rare to find, and the mounting bracket is impossible to find. The late model front valance which can fit any E30 are much easier to find and you can even find new aftermarket parts available online.
I’m currently running the early model valance with the is front spoiler with a factory mount, but I’ve got a late model valance I’ll be swapping in soon.
Russell that is an early model front valance with one of the lips available. Basically the base model setup…