I'd go with the Forge as it's a true drop-in, no mods, no trimming, AND the hose end caps are machined to accept the OEM BMW hoses with OEM fittings.
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2017 X5 4.0dSE ~ Atlas Cedar:Ind.Amaro Brown Merino&Piano Blk, Sport Auto, DHP, Comfort seats, Cold weather pack, HK audio, Electric towbar, Sun protection glass.
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