A guy (RocDoc anyone?) in Scotland, (of USA TrackDog experience) long campaigned a bloody quick supercharged-water injected bla bla 1.6 Auto without issues.
I was in it for a few pax laps. It was really brutally quick and 100% reliable Think it popped out 200+bhp.
These boxes saw global service in much heavier production vehicles...not a lot for them to do in a lightweight 5 really.
I've been regularily caning my 1840cc Auto for a decade. It's perfect. Mind you, it gets new ATF & filter every 3 years or so.
So did a former Nutz poster call "Gixer" in Greece...but his was a BRG 1840cc supercharged, and modified through losing an arm.
Never heard from Gixer for a long time.
Don't worry about a serviced Auto. They are hard as nails.
If for some odd reason it croaks, the likes of AK Automotive will ship one off for little money.