How to tell 1 14b from a big 16g?

[Focusonme13]

on the metal plate, on the turbo itself, r the numbers the same for the 14b and the 16g?......i just bought a turbo and the guy said its a BIG 16g, but the numbers were the same as my 14b, so im just curious cuz i dont really know how to tell the diference

 

[Groomz]

http://www.vfaq.com/mods/Turbo-compare.html

There's a pic down at the bottom. Basically the 16G has high/low compressor blades, while the 14b blades are all the same height.