I’ve owned a 94 WJ Laredo with the 4L And a 97 XJ Sport with the 4L. I can tell you personally the OBD2 version is better. Actually in 2000 they revised the intake manifold for more power. But having owned 2 of those, I must tell you that I am currently driving a 2007 Envoy 4x4 SLT. The Envoy is heavier, and more…