tdo5 h turbo question

[Arron Evo 1]

hello every1 does any1 know what the biggest high flow tdo5 h turbo there is ive seen some turbos with 20g and 16g on it how do you measure that to tell which is which? thanks

 

[Liberoz]

most likely the 20g has had the 20g internals put inside the 16g housing
which is fairly common.