ULEZ and new engine

[[email protected]]

I believe it's quite common to replace engines in the USA but does anyone have any advice or information about a Bongo replacement petrol engine here in the UK? I live in a ULEZ toxic tax area and have until October 2021 to comply with the legislation or pay £12.50 per day when I drive. Another solution is a special exhaust system which needs annual maintenance at about £200 pa. Any help gratefully received.
Thank you.

[jimmo62]

I recall seeing something about a Lexus engine -
viewtopic.php?f=3&t=74250&p=707652&hilit=lexus#p707652