Stonehenge?

[Makanyane]

yes you would need to replace model for one of the existing wonders and then change it in the text file so:

{mausoleum_title} Stonehenge

you need to add effects for the wonder - which is explained in the tutorial referred to - but don't worry about negating them in BI as the wonder effects don't work anyway from bitter personal experience as it took me a while to work that one out!

Happiness effect from owning a wonder does work though, there is just one peculiarity, the Statue wonder gives you the happiness-wonder bonus if you start off with it in one of the cities you own at the beginning of the game. The other wonders only give you the wonder-happiness effect if you capture them.

EDIT: am adding notes on the end of tutorial and discussion thread to clarify that info.