Thanks guys. My local auto-parts store has a stainless steel arched heat/weather shield specifically designed for air filters. I think I'm going to give it a try and bolt a K&N directlky onto the GT35R I'm planning to install shortly. I had the compressor inlet machined down from 4" to 3.25" to make it easier to route intake pipes, but I think I'll go with the direct bolt on solution for now and see how that works out. I can always route the intake plumbing into the engine bay if I find it's getting dirty too quickly. At least I'll save some $$$ with intake plumbing for now 
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Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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