I'm running a full Miltek 3' system (Litchfield Spec C version) as far as I know you can't swap bits between other systems and the Miltek without cutting and shutting!
Mine has passed emissions every MOT since fitting (about 5 years I think) only narrowly needed a retest once because it was done while the car was cold.
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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