20G is not a towing turbo. It's a throwing mud and sand at higher rpm turbo.
16G and 18G are the two compressors of more useful size.
Figured as much, was curious to see where it stood in line compared to the other offerings they have. I’ll look at their 16/18g offerings, I have an hx40 pro sitting here but that’s way too big for the little 4.2.