My K&N is one of my biggest regrets on spending money.

That being said I found these:

Summit Racing - K&N

4 Wheel Parts has one for an 88 (they didn't have it listed for '87s for some reason)(K/N57-9008): 4 Wheel Parts - K&N 2.4


'89 3.0 4Rnr: Jacob's Electronics, K&N, CF Dual Frict, 4:56 w/ Truetracs, 33 BFG AT/KOs, Cascade Audio, Pro-Comp 4" susp & 2" body (previous owner)

I know, a lot of wasted time and money ... if I knew then what I know now....