All 4AGE engines hold the exact same exhaust port placement and just the 20v engine incorporates a big difference with the mounting deal with. That distinction being that around the 20v The 2 outer holes are location more outwards that its 16V equal. Using the 20v engines commonly attaining recognition https://toyota4ageengineforsale03566.jts-blog.com/30551935/toyota-4age-engine-for-sale-an-overview