That don't seem worth it for 12 bhp no ??
You're only looking at the peak gains
Look at the average area of the curve and look how much power is available across the rev range

Also I don't think Greg's has bigger injectors

There was until recently a myth that you slap on a hybrid turbo and you'll see an easy 225bhp +. It wasn't until a RR last year that a lot of hybrid diesel owners finally found out the truth

It just isn't possible on the standard injectors - not without pushing them to beyond their limits which also gives you a very smoky map. Then of course you shorten their life span considerably
As Neil said; hybrid, cheap and reliable never fit in the same sentence