CBE will give you a tiny bit more than the HFC at twice the price but definately a nice sound. I'd go for all three for the best bang for the buck ;P Depending on how much a dyno tune is for you may also be a good value...
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'09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra // 
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