Pete, I started with the 8v Vaux on a 98 ex academy car and have since fitted the 2L 16v Vaux.
It drops straight on to the original mounts and I'm running on the original 40's. My brother did all the work as he's the expert and whilst there were a few issues to overcome, the net result is a great car.
If it's a serious consideration let me know and I can trawl though my paperwork and let you know what needed to be done.
The major issues were the need to replace the rear axle for Ford to take the power, and we decided to fit a dry sump system due to oil pick up problems. The latter added to the cost, the former was a net gain as I sold the Ital for a lot more than the Ford one cost me.
Gary