# QA1 67-69 F / 68-72 X Body Ford Mustang 9in Narrowed Rear Axle Assembly PRODUCT OVERVIEW Already running one of QA1's 4-Link Suspension Kits on your 1st Gen F-Body or 68-72 Nova? Now, take your build to the next level with QA1's custom 9" rear housing, engineered to integrate seamlessly with your existing QA1 setup. Designed for enthusiasts looking to improve performance and durability, this 9" housing is the perfect upgrade for handling more horsepower, and aggressive driving conditions. ENHANCE YOUR EXISTING QA1 4-LINK QA1's 9" rear housing is designed to bolt seamlessly to your QA1 4-link system, with fully formed trailing arm brackets that minimize flex under heavy loads, enhancing strength and rigidity. Whether you're increasing horsepower or seeking a more durable rear-end solution, the custom QA1 9" rear housing delivers the performance gains you need. Its bolt-on design simplifies installation, saving time in the shop. Helpful Specifications: 54-3/4" narrowed wheel mounting surface width. Narrowed 2-1/2" per side for use with mini tubs for wider wheel and tires Big Ford "New Style Torino Flanges" with 2.5" axle offset for easy brake compatibility 5x4-3/4" factory bolt pattern, standard fitment and a wide range of wheel options "x 3" wheel studs for better fit with alloy wheels 2.770" hub diameter Requires third member for Ford 9" housings with 31 spline axles EASY INSTALLATION & SERVICEABLITY QA1 is committed to delivering products that make upgrading your car as simple as possible. Our 9" housings for QA1 4-link kits are designed for a bolt-on installation, eliminating the need for custom fabrication. Servicing your 9" rear end is also straightforward, featuring a dedicated fill port, drain plug, vent port, and jack plate FITMENT NOTES Verify wheel and tire fitment on vehicle prior to installation Center section (3rd member) not included Narrowed housing recommended to be used with custom offset wheels and mini tubs Compatible only with QA1 four link suspension system - Formed Trailing Arm Brackets reduce flex under high loads, ensuring your suspension remains rigid - Durable Semi-Gloss Powder coat Finish offers long-lasting protection and a clean, sleek look - Includes T-bolts and Housing Studs for assembling axle shafts and installing third members - 31-Spline 1541H Alloy Axles support up to 650HP, with the housing handling up to 800HP - Drain Plug, Fill Plug, and Jack Pad come standard to make service a breeze - Narrowed width for maximum wheel and tire package This Part Fits: Year Make Model Submodel 1967-1969 Chevrolet Camaro Base 1967-1969 Chevrolet Camaro RS 1967-1969 Chevrolet Camaro SS 1967-1969 Chevrolet Camaro Z28 1968 Chevrolet Chevy II Nova 1969-1972 Chevrolet Nova Base 1967 Pontiac Firebird 326 1968-1969 Pontiac Firebird 350 1969 Pontiac Firebird 350 HO 1967-1969 Pontiac Firebird 400 1967-1969 Pontiac Firebird Base 1967-1968 Pontiac Firebird HO 1967-1969 Pontiac Firebird Sprint 1969 Pontiac Firebird Trans Am 1971-1972 Pontiac Ventura Base ## Details - **Price:** 4219.22 CAD - **Vendor:** QA1 - **Type:** Shocks and Struts ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 4219.22 CAD | In stock | ## Images - Photo - Primary - Photo - Close Up - Photo - Close Up - Photo - Close Up - Photo - Close Up - Photo - lifestyle view - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/qa1-67-69-f-68-72-x-body-ford-mustang-9in-narrowed-rear-axle-assembly) > Updated: 2026-09-02