From what I can see from the pictures the person likely just had a turboback as there is no heatshield. GBOD's are in place, probably didn't have larger injectors. . . but one thing that's odd is that the uppipe-> turbo gasket looks as if it's brand freaking new. Perhaps the last owner didn't have it long after they put the uppipe on it.
bov - likely - there's a pull tie holding the vaccum line on so chances are that's not the OEM vac line. Could have been cut to put a boost gauge in as well. Looks like hte AC line above the intercooler may have been moved. If that was done it was likely done for a larger TMIC.
I can' tell from the lo-res photo's, but that's what i can see.