You are right. But if you actually look at what both Dinan and RD Sport do and how much money they ask for it, this DIY stroker still looks like a bargain. RD Sport RS46 treatment costs $32,800 (Stroker, headers, exhaust, tune). Dinan's S3-R package costs $31,200 (2mm extra bore, stroker kit, exhaust, tune, intake, pully, ported throttle bodies)
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