727 speedometer housing

I bought the correct housing from Locomotion already. But I took a pic of my housing. After talking to him and searching around some, it looks like I have a 25 tooth and lower housing. I need the common 26 and up housing.

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Hi
Have 727 (TCI StreetFighter Transmissions 111100 https://www.summitracing.com/int/parts/tci-111100) and struggling to find the correct gear housing, can you please share the number (or producer) of this part to buy it? I've contacted directly tech support of TCI but the reply was "we have no housings for 727 TF and have no tech details on the housing to find an analog". thanks a lot in advance!