Traditional turbochargers sit under the hood, while rear-mount turbos are attached to the car's underside. Traditional turbochargers mount to the engine's exhaust manifold, under the hood. Since Corvette C5 engine bays are already cramped, adding an aftermarket front-mounted turbocharger to one can be difficult, sometimes requiring modified hoods and other engine components. Rear-mount turbos avoid this issue of space by mounting further down the exhaust, underneath the vehicle. There are advantages to each system of turbo mounting.
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