Hey Choogz,
I bought my GQV right when you posted about your inlet manifold issues.
I have had to replace the radiator a few months after purchase. The mechanic crushed the cable so I had no parking sensors until I could be bothered to take it to alfa to replace them(1 year).
In November 2019 a month or two after replacing the radiator my car overheated after driving less than 10km from Preston, VIC to Brunswick.
It had 3 water pumps replaced because it kept dumping fuel. I found your post and suggested they check the inlet manifold....I had the same issue.
Recently the check engine light came on, I took it to Automoda in Five Dock and he said the inlet problem will happen again. Theight was only in because of an exhaust sensor and was a quick fix.
So if it makes you feel better I think I may have bought the bigger lemon 😅😒😪