Your right - it is coil spring. Too wide for a Versailles - those bolt right into the Maverick and also had leaf springs.
My 1976 LTD wagon has the big 9", coil springs, rear disc brakes, and a chevy bolt pattern I believe.
A Chevy bolt pattern? Never knew that. I thought the small cars had 5x4 1/2 and the larger cars were 5x5. F100's 5x5 1/2 except the 80 model F100 which had the smaller car pattern. I also didn't realize the 70's LTD's ever had rear discs on them. They would make a good swap for an F100 rear disc swap. clint
To my knowledge, the Ford trucks/vans didn't get rear disc brakes until around 2000 [give or take]. It's not uncommon to find 9-inch disc brake rear ends in the mid-to-late 70's Ford passenger cars like the T-Birds/Mercury Cougars, Mk-series Lincolns, '77-'80 Lincoln Versailles. Of these, the '77-'80 Lincoln Versailles is the only disc brake rear with a narrow enough width to fit something like a Maverick, early Mustang, Cougar, Falcon, etc. without the need for altering the housing width. It is also the only 9-inch passenger car rear end that's configured for leaf springs [with perches on 43-inch centers], and not configured for coil springs like the rest of the passenger car 9", and it has the correct 5-on-4½" lug pattern. Many people think the only Fords that came with 9-inch rears where either really big passenger cars, V-8 performance cars like a Boss/Shelby Mustang, etc., or in a Ford half ton pickup. However, that is not true. The rear end pictured below is a [small axle bearing] stock 9-inch drum brake rear end I pulled out from under an '80 model Mercury Monarch [Mercury's version of the Ford Granada]. --That Monarch was powered by a factory-installed 250 inline 6-cylinder. The photos below shows what the very same Monarch 9-inch rear end from above looked like after I cleaned it up, removed the drum assemblies, fabricated some adapter brackets and then adapted some '94-'04 11.65" Cobra rear discs to the housing: In the case of the The '77-'80 Lincoln Versailles [large axle bearings], they came factory-stock with a 9-inch rear end with disc brakes. This same disc brake rear was also optional in the '75-'80 Granadas and Mercury Monarchs. Finding one is very difficult these days, and generally very expensive if you do. I have a '79 Versailles 9-inch disc brake rear, in addition to the '80 Monarch 9-inch drum brake rear pictured from above, I've had for a good number of years. The Versailles disc brake rear was a very popular swap 10 years ago or more when this was basically the only option someone had to get rear discs aside from buying a very expensive disc brake conversion from someone like Baer, Wilwood, etc. Anymore, the Versailles really isn't worth it. The calipers are very heavy cast-iron units, the flexible caliper hoses are nearly impossible to get from the parts stores these days, and replacement parts for them are pretty expensive. They are also basically useless, as far as the parking brakes go, if you don't get the parking brake cables/brackets along with the rear end assembly. The good news is if you do have a Versailles rear end, it can be converted to more modern '94-'04 SN95 Cobra brake components that are MUCH lighter, available at most any parts stores and SN95 Mustang rear disc replacement parts can be bought at reasonable prices. --Even if you don't have a small or large bearing 9-inch, you can still adapt the SN95 10½" solid V6/GT rotors or the 11.65" ventilated Cobra rotors to the 8-inch rear end housings too, since they have the same size small axle bearings as the small axle bearing 9-inch rears.