FD3S Adjustable Billet Engine Mount Select 5mm extended hardware for use with the Turblown FD3S Oil Pan New Features: Lighter by 3.7oz each. Nearly 1/2 lb for the set Locking tab for mount bracket allows easy installation – Available in three firmness 68A (Soft) – This is nearest to the stock mount feel but transfers slightly more vibration/noise but offers increased response. 85A (Firm) – An intermediate step from the 68A for higher horsepower street/strip applications. Delrin (Solid) – For essentially rigid engine mounting for extremely high horsepower applications and track use. – Maximum surface area for confident leak-free oilpan sealing – Mounts CNC’ed from Type II anodized 6061-T6 Aluminum – High Strength class 12.9 hardware. Extended Hardware available for thicker oil pans or pan brace. (5mm longer than standard hardware) – Brackets from Electroless Nickel plated 10 gauge 1018 CR Steel – Removable bushings allow for end user replacement for softer/harder choices We recommend only using Permatex “Right Stuff” sealant If you can’t decided on which firmness or are worried about potential vibration transmission please contact us for more insight. *The “Soft” compound will transmit more vibration than a OEM mount.