Does anyone have pics or measurements or advise to be able to tell the 2 compressor wheels apart?? TIA

 

I found the specs. NVM

 

as i remember the 30r can have a few different sizes in compressor wheels, 71mm, 76mm, 82mm ect... it all depends on how they are labeled from the manufacturer. Compressor wheel designs vary but look alot alike in some cases, extruded fin design, depth of fin, flow capacity, number of fins, product material, ect... It all depends on what the turbo was designed for (low end, top end, broad power band ect...) Turbine wheels vary as well, and so do the compressor covers.
I hope this helps.