Wouldn't really be practical the way the E34 is built. The ECU box is in the way, and the partition it sits behind is connected to the HVAC inlet plenum under the cowl. On the other side the fuse box gets in the way. The only way to vent out of the fender gap or a vent in the fender would be to run a hose or duct through the wheel well or modify the partitions that hold the ECU box and fuse box and run a duct through them, relocating the fuse box and ecu in the process. The E34's design really doesn't make this turbo stuff easy, I love how my E34 wagon looks, and the car is good in many ways, but I would not turbocharge one again, at least not with an engine that is slanted. It's a pain in the ass.
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