I really didn't Consider they did Substantially on the bigport and smallport? I'd a S/T 20v at the time that hated existence when it was disconnected.. I had been gonna return the engine, but ultimately, Greg in the JJH team talked me into preserving it, and don’t regret it whatsoever. https://elliotqaglo.blog2freedom.com/26762988/not-known-facts-about-toyota-4age-blacktop-engine-for-sale