2.0i Petrol for 130/135i Conversion in the UK

[DaveJef]

Hi all,
Hoping for some help here. 🙏
So I have a project, which I am enjoying immensely, it’s become a Labour of Love.
I purchased a 2008 E82 118i SE Convertible,with black cloth interior, it is now a Complete M Sport with all M Trimmings inside , Red Leather interior, lots of nice subtle details with an ID4Motion Cluster, 10.5 Screen ApplePlay with reverse camera and sensors, still got bits like the exhaust and White Halo’s to do.
One thing has become very apparent now, I would like more Power, so ideally a Six Cylinder 130i or preferably 135i, but I would like this fitted professionally, too much work for me!
I live in England UK, does anyone know who would do this conversion for me if I purchased a complete donor car?
Alternatively, I would opt for a Turbo Conversion on the four cylinder but that is also proving hard to find, does anyone know who if anyone does this?
Have looked into Hyde Supercharging, but too many bad reviews and apparent poor build quality.
Regards and thanks in advance
Dave