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Cost of Twin Plugging?
Hi Gang,
I'm just throwing up some ideas in my head about the possibility of getting my Carrera Heads modified for a Twin Plug setup.
What does this upgrade typically cost in terms of machine work and what components would I require?
If it's not too expensive, I might get the heads done whilst they're off for the top end rebuild anyway.
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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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