If the OP would read the linked post, he'd know which housing he has, but to save him some time, here's the info...
Courtesy
@cosgig...and
@Bad Sport
Before the 1970 model year, the splitter block was located up on the hump of the center section a bit! In 1970, it was moved down the drivers side tube a bit! This will also play havoc when you have the wrong unit as the rubber flex line from the body to the axle will not be long enough on a 70 and later car when using a 69 and earlier housing, and vise versa! Ask me how I know... I used a housing from a Duster in my 66 Cuda!! The mounting location of the body bracket moved with the splitter block!!
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